diff --git a/apps/figcraft/src/main.rs b/apps/figcraft/src/main.rs
index 1babfd5b..5debb538 100644
--- a/apps/figcraft/src/main.rs
+++ b/apps/figcraft/src/main.rs
@@ -169,6 +169,9 @@ fn main() -> eframe::Result {
     if session.docs.is_empty() && !first_run {
         let _ = session.execute("file.new", &json!({}));
     }
+    // The interface language from the first frame on, and for the message when the window can't
+    // open (no frame then).
+    figcraft_ui_egui::i18n::set(&session.prefs.language, figcraft_ui_egui::Services::system_language(&svc).as_deref());
     let mut fig = FigApp::new(session, Box::new(svc));
     fig.ui.home = false;
     fig.note_recovered(recovered.copies);
diff --git a/apps/figcraft/src/startup.rs b/apps/figcraft/src/startup.rs
index 8a50d7a5..a25821f3 100644
--- a/apps/figcraft/src/startup.rs
+++ b/apps/figcraft/src/startup.rs
@@ -4,28 +4,11 @@
 //! graphics adapter, a surface or device the driver refuses) went to a standard error nobody sees
 //! and the app quit without a word (#261). Now it is logged and shown in a message box.
 
-/// Where a report goes.
-const ISSUES: &str = "https://github.com/storytold/figcraft/issues";
-
-/// The text shown when the window couldn't open with `error`. `backend_set`: `WGPU_BACKEND` named
-/// the graphics API, so the hint is to unset it rather than to try another one.
-pub fn message(error: &str, backend_set: bool) -> String {
-    let hint = if backend_set {
-        "WGPU_BACKEND is set and names the graphics API to use; unsetting it lets FigCraft choose."
-    } else if cfg!(windows) {
-        // Direct3D 12 and OpenGL are both offered (`graphics.rs`), but wgpu keeps the Direct3D 12
-        // adapter it picked even when its device then fails, so naming OpenGL alone can still help.
-        "Updating the graphics driver often helps. To use OpenGL only, start FigCraft from a Command Prompt with:\n\nset WGPU_BACKEND=gl\nfigcraft.exe"
-    } else {
-        "Updating the graphics driver often helps. WGPU_BACKEND (vulkan, gl, metal) names another graphics API to try."
-    };
-    format!("FigCraft couldn't open its window: {error}\n\n{hint}\n\nIf it keeps happening, please report it at {ISSUES} with this message.")
-}
-
 /// Log the failure and, unless `quiet` (started for an agent with `--control`: a modal box would
 /// keep the caller waiting, and it reads standard error), show it in a message box.
 pub fn failed(error: &eframe::Error, quiet: bool) {
-    let text = message(&error.to_string(), std::env::var_os("WGPU_BACKEND").is_some());
+    // In the interface language: the text and its catalog entries are the UI crate's.
+    let text = figcraft_ui_egui::dialogs::window_failed(&error.to_string(), std::env::var_os("WGPU_BACKEND").is_some());
     // Standard error even when RUST_LOG turned errors off.
     if log::log_enabled!(log::Level::Error) {
         log::error!("{text}");
diff --git a/apps/figcraft/src/startup_tests.rs b/apps/figcraft/src/startup_tests.rs
index 6818ae77..0c92bd19 100644
--- a/apps/figcraft/src/startup_tests.rs
+++ b/apps/figcraft/src/startup_tests.rs
@@ -1,7 +1,7 @@
 //! The message shown when the window can't open: it carries the error, a next step and where to
 //! report it, instead of the app quitting silently (#261).
 
-use crate::startup::message;
+use figcraft_ui_egui::dialogs::window_failed as message;
 
 const ERROR: &str = "WGPU error: Failed to create surface for any enabled backend: {}";
 
diff --git a/crates/ui-egui/locales/de.toml b/crates/ui-egui/locales/de.toml
index affda97d..5987ec70 100644
--- a/crates/ui-egui/locales/de.toml
+++ b/crates/ui-egui/locales/de.toml
@@ -457,6 +457,7 @@ status = "draft — needs native review"
 "Fade" = "Verblassen"
 "False" = "Falsch"
 "Fetching from the server…" = "Wird vom Server abgerufen…"
+"FigCraft couldn't open its window: {error}" = "FigCraft konnte sein Fenster nicht öffnen: {error}"
 "File" = "Datei"
 "File name" = "Dateiname"
 "File published" = "Datei veröffentlicht"
@@ -568,6 +569,7 @@ status = "draft — needs native review"
 "Hue" = "Farbton"
 "Hug" = "Umschließen"
 "Hug contents" = "Inhalt umschließen"
+"If it keeps happening, please report it at {link} with this message." = "Wenn es weiterhin passiert, melden Sie es bitte mit dieser Meldung unter {link}."
 "If" = "Wenn"
 "If {condition}" = "Wenn {condition}"
 "Ignore auto layout (absolute position)" = "Auto-Layout ignorieren (absolute Position)"
@@ -1323,6 +1325,8 @@ status = "draft — needs native review"
 "Update plugin" = "Plugin aktualisieren"
 "Updated {components} and {styles}" = "{components} und {styles} aktualisiert"
 "Updated {name}" = "{name} aktualisiert"
+"Updating the graphics driver often helps. To use OpenGL only, start FigCraft from a Command Prompt with:" = "Oft hilft es, den Grafiktreiber zu aktualisieren. Um nur OpenGL zu verwenden, starten Sie FigCraft in der Eingabeaufforderung mit:"
+"Updating the graphics driver often helps. WGPU_BACKEND (vulkan, gl, metal) names another graphics API to try." = "Oft hilft es, den Grafiktreiber zu aktualisieren. Mit WGPU_BACKEND (vulkan, gl, metal) lässt sich eine andere Grafik-API ausprobieren."
 "Uploads this file to a FigCraft server and keeps this tab in sync with it. You get a link to edit and a link to view." = "Lädt diese Datei auf einen FigCraft-Server hoch und hält diesen Tab mit ihm synchron. Sie erhalten einen Link zum Bearbeiten und einen zum Ansehen."
 "Uppercase" = "Großbuchstaben"
 "Use a fixed value" = "Festen Wert verwenden"
@@ -1364,6 +1368,7 @@ status = "draft — needs native review"
 "Visibility" = "Sichtbarkeit"
 "Visible" = "Sichtbar"
 "Vivid" = "Lebhaft"
+"WGPU_BACKEND is set and names the graphics API to use; unsetting it lets FigCraft choose." = "WGPU_BACKEND ist gesetzt und legt die Grafik-API fest; ohne diese Variable wählt FigCraft selbst."
 "Warm" = "Warm"
 "Watch" = "Smartwatch"
 "Wavy" = "Gewellt"
diff --git a/crates/ui-egui/locales/en.toml b/crates/ui-egui/locales/en.toml
index 08ac64ba..21df8bfe 100644
--- a/crates/ui-egui/locales/en.toml
+++ b/crates/ui-egui/locales/en.toml
@@ -475,6 +475,7 @@ name = "English"
 "False" = "False"
 "Feb" = "Feb"
 "Fetching from the server…" = "Fetching from the server…"
+"FigCraft couldn't open its window: {error}" = "FigCraft couldn't open its window: {error}"
 "File" = "File"
 "File name" = "File name"
 "File not found" = "File not found"
@@ -594,6 +595,7 @@ name = "English"
 "Hug contents" = "Hug contents"
 "Icon components on a 24 px grid with keylines and a size preview" = "Icon components on a 24 px grid with keylines and a size preview"
 "Icon set starter" = "Icon set starter"
+"If it keeps happening, please report it at {link} with this message." = "If it keeps happening, please report it at {link} with this message."
 "If" = "If"
 "If {condition}" = "If {condition}"
 "Ignore auto layout (absolute position)" = "Ignore auto layout (absolute position)"
@@ -1389,6 +1391,8 @@ name = "English"
 "Update from selection" = "Update from selection"
 "Updated {components} and {styles}" = "Updated {components} and {styles}"
 "Updated {name}" = "Updated {name}"
+"Updating the graphics driver often helps. To use OpenGL only, start FigCraft from a Command Prompt with:" = "Updating the graphics driver often helps. To use OpenGL only, start FigCraft from a Command Prompt with:"
+"Updating the graphics driver often helps. WGPU_BACKEND (vulkan, gl, metal) names another graphics API to try." = "Updating the graphics driver often helps. WGPU_BACKEND (vulkan, gl, metal) names another graphics API to try."
 "Uploads this file to a FigCraft server and keeps this tab in sync with it. You get a link to edit and a link to view." = "Uploads this file to a FigCraft server and keeps this tab in sync with it. You get a link to edit and a link to view."
 "Uppercase" = "Uppercase"
 "Use a fixed value" = "Use a fixed value"
@@ -1431,6 +1435,7 @@ name = "English"
 "Visibility" = "Visibility"
 "Visible" = "Visible"
 "Vivid" = "Vivid"
+"WGPU_BACKEND is set and names the graphics API to use; unsetting it lets FigCraft choose." = "WGPU_BACKEND is set and names the graphics API to use; unsetting it lets FigCraft choose."
 "Warm" = "Warm"
 "Watch" = "Watch"
 "Wavy" = "Wavy"
diff --git a/crates/ui-egui/locales/es.toml b/crates/ui-egui/locales/es.toml
index 3200e891..af5c6a15 100644
--- a/crates/ui-egui/locales/es.toml
+++ b/crates/ui-egui/locales/es.toml
@@ -476,6 +476,7 @@ status = "draft — needs native review"
 "False" = "Falso"
 "Feb" = "feb"
 "Fetching from the server…" = "Obteniendo del servidor…"
+"FigCraft couldn't open its window: {error}" = "FigCraft no pudo abrir su ventana: {error}"
 "File" = "Archivo"
 "File name" = "Nombre del archivo"
 "File not found" = "No se encuentra el archivo"
@@ -595,6 +596,7 @@ status = "draft — needs native review"
 "Hug contents" = "Ajustar al contenido"
 "Icon components on a 24 px grid with keylines and a size preview" = "Componentes de icono en una cuadrícula de 24 px con líneas guía y una vista de tamaños"
 "Icon set starter" = "Base de conjunto de iconos"
+"If it keeps happening, please report it at {link} with this message." = "Si sigue pasando, infórmalo en {link} con este mensaje."
 "If" = "Si"
 "If {condition}" = "Si {condition}"
 "Ignore auto layout (absolute position)" = "Ignorar diseño automático (posición absoluta)"
@@ -1390,6 +1392,8 @@ status = "draft — needs native review"
 "Update from selection" = "Actualizar desde la selección"
 "Updated {components} and {styles}" = "Actualizados {components} y {styles}"
 "Updated {name}" = "{name} actualizado"
+"Updating the graphics driver often helps. To use OpenGL only, start FigCraft from a Command Prompt with:" = "Actualizar el controlador gráfico suele ayudar. Para usar solo OpenGL, inicia FigCraft desde el Símbolo del sistema con:"
+"Updating the graphics driver often helps. WGPU_BACKEND (vulkan, gl, metal) names another graphics API to try." = "Actualizar el controlador gráfico suele ayudar. WGPU_BACKEND (vulkan, gl, metal) indica otra API gráfica que probar."
 "Uploads this file to a FigCraft server and keeps this tab in sync with it. You get a link to edit and a link to view." = "Sube este archivo a un servidor FigCraft y mantiene esta pestaña sincronizada con él. Obtienes un enlace para editar y otro para ver."
 "Uppercase" = "Mayúsculas"
 "Use a fixed value" = "Usar un valor fijo"
@@ -1432,6 +1436,7 @@ status = "draft — needs native review"
 "Visibility" = "Visibilidad"
 "Visible" = "Visible"
 "Vivid" = "Vívido"
+"WGPU_BACKEND is set and names the graphics API to use; unsetting it lets FigCraft choose." = "WGPU_BACKEND está definida e indica la API gráfica que se usa; si la quitas, FigCraft elige por sí mismo."
 "Warm" = "Cálido"
 "Watch" = "Reloj"
 "Wavy" = "Ondulado"
diff --git a/crates/ui-egui/locales/fr.toml b/crates/ui-egui/locales/fr.toml
index 69798340..1f5544c2 100644
--- a/crates/ui-egui/locales/fr.toml
+++ b/crates/ui-egui/locales/fr.toml
@@ -457,6 +457,7 @@ status = "draft — needs native review"
 "Fade" = "Fondu"
 "False" = "Faux"
 "Fetching from the server…" = "Récupération depuis le serveur…"
+"FigCraft couldn't open its window: {error}" = "FigCraft n’a pas pu ouvrir sa fenêtre : {error}"
 "File" = "Fichier"
 "File name" = "Nom du fichier"
 "File published" = "Fichier publié"
@@ -568,6 +569,7 @@ status = "draft — needs native review"
 "Hue" = "Teinte"
 "Hug" = "Ajuster"
 "Hug contents" = "Ajuster au contenu"
+"If it keeps happening, please report it at {link} with this message." = "Si cela se reproduit, signalez-le sur {link} avec ce message."
 "If" = "Si"
 "If {condition}" = "Si {condition}"
 "Ignore auto layout (absolute position)" = "Ignorer la mise en page auto (position absolue)"
@@ -1323,6 +1325,8 @@ status = "draft — needs native review"
 "Update plugin" = "Mettre à jour le plugin"
 "Updated {components} and {styles}" = "{components} et {styles} mis à jour"
 "Updated {name}" = "{name} mis à jour"
+"Updating the graphics driver often helps. To use OpenGL only, start FigCraft from a Command Prompt with:" = "Mettre à jour le pilote graphique aide souvent. Pour n’utiliser qu’OpenGL, lancez FigCraft depuis l’invite de commandes avec :"
+"Updating the graphics driver often helps. WGPU_BACKEND (vulkan, gl, metal) names another graphics API to try." = "Mettre à jour le pilote graphique aide souvent. WGPU_BACKEND (vulkan, gl, metal) désigne une autre API graphique à essayer."
 "Uploads this file to a FigCraft server and keeps this tab in sync with it. You get a link to edit and a link to view." = "Envoie ce fichier sur un serveur FigCraft et garde cet onglet synchronisé avec lui. Vous obtenez un lien de modification et un lien de consultation."
 "Uppercase" = "Majuscules"
 "Use a fixed value" = "Utiliser une valeur fixe"
@@ -1364,6 +1368,7 @@ status = "draft — needs native review"
 "Visibility" = "Visibilité"
 "Visible" = "Visible"
 "Vivid" = "Vif"
+"WGPU_BACKEND is set and names the graphics API to use; unsetting it lets FigCraft choose." = "WGPU_BACKEND est définie et impose l’API graphique ; sans elle, FigCraft choisit lui-même."
 "Warm" = "Chaud"
 "Watch" = "Montre"
 "Wavy" = "Ondulé"
diff --git a/crates/ui-egui/locales/ja.toml b/crates/ui-egui/locales/ja.toml
index fb81b042..9174a65a 100644
--- a/crates/ui-egui/locales/ja.toml
+++ b/crates/ui-egui/locales/ja.toml
@@ -478,6 +478,7 @@ status = "draft — needs native review"
 "False" = "false"
 "Feb" = "2月"
 "Fetching from the server…" = "サーバーから取得中…"
+"FigCraft couldn't open its window: {error}" = "FigCraft のウィンドウを開けなかった：{error}"
 "File" = "ファイル"
 "File name" = "ファイル名"
 "File not found" = "ファイルが見つからない"
@@ -597,6 +598,7 @@ status = "draft — needs native review"
 "Hug contents" = "内容に合わせる"
 "Icon components on a 24 px grid with keylines and a size preview" = "24 px グリッドのアイコンコンポーネント、キーライン、サイズのプレビュー"
 "Icon set starter" = "アイコンセットの雛形"
+"If it keeps happening, please report it at {link} with this message." = "繰り返し起きる場合は、このメッセージを添えて {link} に報告。"
 "If" = "条件"
 "If {condition}" = "条件：{condition}"
 "Ignore auto layout (absolute position)" = "オートレイアウトを無視（絶対位置）"
@@ -1392,6 +1394,8 @@ status = "draft — needs native review"
 "Update plugin" = "プラグインを更新"
 "Updated {components} and {styles}" = "{components}と{styles}を更新済み"
 "Updated {name}" = "{name} を更新済み"
+"Updating the graphics driver often helps. To use OpenGL only, start FigCraft from a Command Prompt with:" = "グラフィックスドライバーの更新で解決することが多い。OpenGL だけを使うには、コマンドプロンプトから次のように FigCraft を起動："
+"Updating the graphics driver often helps. WGPU_BACKEND (vulkan, gl, metal) names another graphics API to try." = "グラフィックスドライバーの更新で解決することが多い。WGPU_BACKEND（vulkan、gl、metal）で別のグラフィックス API を試せる。"
 "Uploads this file to a FigCraft server and keeps this tab in sync with it. You get a link to edit and a link to view." = "このファイルを FigCraft サーバーにアップロードし、このタブを同期した状態に保つ。編集用リンクと閲覧用リンクが発行される。"
 "Uppercase" = "大文字"
 "Use a fixed value" = "固定値を使用"
@@ -1434,6 +1438,7 @@ status = "draft — needs native review"
 "Visibility" = "表示"
 "Visible" = "表示"
 "Vivid" = "ビビッド"
+"WGPU_BACKEND is set and names the graphics API to use; unsetting it lets FigCraft choose." = "WGPU_BACKEND が設定されていて、使うグラフィックス API を指定している。解除すると FigCraft が選ぶ。"
 "Warm" = "ウォーム"
 "Watch" = "ウォッチ"
 "Wavy" = "波線"
diff --git a/crates/ui-egui/locales/ko.toml b/crates/ui-egui/locales/ko.toml
index aed3529a..e672efe7 100644
--- a/crates/ui-egui/locales/ko.toml
+++ b/crates/ui-egui/locales/ko.toml
@@ -458,6 +458,7 @@ status = "draft — needs native review"
 "Fade" = "페이드"
 "False" = "거짓"
 "Fetching from the server…" = "서버에서 가져오는 중…"
+"FigCraft couldn't open its window: {error}" = "FigCraft 창을 열 수 없음: {error}"
 "File" = "파일"
 "File name" = "파일 이름"
 "File published" = "파일 게시됨"
@@ -569,6 +570,7 @@ status = "draft — needs native review"
 "Hue" = "색조"
 "Hug" = "맞춤"
 "Hug contents" = "내용에 맞춤"
+"If it keeps happening, please report it at {link} with this message." = "계속 발생하면 이 메시지와 함께 {link}에 알려 주세요."
 "If" = "조건"
 "If {condition}" = "조건: {condition}"
 "Ignore auto layout (absolute position)" = "자동 레이아웃 무시(절대 위치)"
@@ -1324,6 +1326,8 @@ status = "draft — needs native review"
 "Update plugin" = "플러그인 업데이트"
 "Updated {components} and {styles}" = "{components} 및 {styles} 업데이트됨"
 "Updated {name}" = "{name} 업데이트됨"
+"Updating the graphics driver often helps. To use OpenGL only, start FigCraft from a Command Prompt with:" = "그래픽 드라이버를 업데이트하면 해결되는 경우가 많습니다. OpenGL만 사용하려면 명령 프롬프트에서 다음과 같이 FigCraft를 시작하세요:"
+"Updating the graphics driver often helps. WGPU_BACKEND (vulkan, gl, metal) names another graphics API to try." = "그래픽 드라이버를 업데이트하면 해결되는 경우가 많습니다. WGPU_BACKEND(vulkan, gl, metal)로 다른 그래픽 API를 시도할 수 있습니다."
 "Uploads this file to a FigCraft server and keeps this tab in sync with it. You get a link to edit and a link to view." = "이 파일을 FigCraft 서버에 업로드하고 이 탭을 동기화된 상태로 유지함. 편집 링크와 보기 링크가 생성됨."
 "Uppercase" = "대문자"
 "Use a fixed value" = "고정 값 사용"
@@ -1365,6 +1369,7 @@ status = "draft — needs native review"
 "Visibility" = "표시 여부"
 "Visible" = "표시됨"
 "Vivid" = "선명하게"
+"WGPU_BACKEND is set and names the graphics API to use; unsetting it lets FigCraft choose." = "WGPU_BACKEND가 설정되어 사용할 그래픽 API를 지정하고 있습니다. 설정을 해제하면 FigCraft가 선택합니다."
 "Warm" = "따뜻하게"
 "Watch" = "시계"
 "Wavy" = "물결선"
diff --git a/crates/ui-egui/locales/pt-BR.toml b/crates/ui-egui/locales/pt-BR.toml
index 97500236..f49beb30 100644
--- a/crates/ui-egui/locales/pt-BR.toml
+++ b/crates/ui-egui/locales/pt-BR.toml
@@ -456,6 +456,7 @@ status = "draft — needs native review"
 "Fade" = "Esmaecer"
 "False" = "Falso"
 "Fetching from the server…" = "Buscando no servidor…"
+"FigCraft couldn't open its window: {error}" = "O FigCraft não conseguiu abrir a janela: {error}"
 "File" = "Arquivo"
 "File name" = "Nome do arquivo"
 "File published" = "Arquivo publicado"
@@ -567,6 +568,7 @@ status = "draft — needs native review"
 "Hue" = "Matiz"
 "Hug" = "Ajustar"
 "Hug contents" = "Ajustar ao conteúdo"
+"If it keeps happening, please report it at {link} with this message." = "Se continuar acontecendo, informe em {link} com esta mensagem."
 "If" = "Se"
 "If {condition}" = "Se {condition}"
 "Ignore auto layout (absolute position)" = "Ignorar layout automático (posição absoluta)"
@@ -1322,6 +1324,8 @@ status = "draft — needs native review"
 "Update plugin" = "Atualizar plugin"
 "Updated {components} and {styles}" = "{components} e {styles} atualizados"
 "Updated {name}" = "{name} atualizado"
+"Updating the graphics driver often helps. To use OpenGL only, start FigCraft from a Command Prompt with:" = "Atualizar o driver de vídeo costuma ajudar. Para usar só o OpenGL, abra o FigCraft pelo Prompt de Comando com:"
+"Updating the graphics driver often helps. WGPU_BACKEND (vulkan, gl, metal) names another graphics API to try." = "Atualizar o driver de vídeo costuma ajudar. WGPU_BACKEND (vulkan, gl, metal) indica outra API gráfica para tentar."
 "Uploads this file to a FigCraft server and keeps this tab in sync with it. You get a link to edit and a link to view." = "Envia este arquivo para um servidor FigCraft e mantém esta aba sincronizada com ele. Você recebe um link para editar e outro para visualizar."
 "Uppercase" = "Maiúsculas"
 "Use a fixed value" = "Usar um valor fixo"
@@ -1363,6 +1367,7 @@ status = "draft — needs native review"
 "Visibility" = "Visibilidade"
 "Visible" = "Visível"
 "Vivid" = "Vívido"
+"WGPU_BACKEND is set and names the graphics API to use; unsetting it lets FigCraft choose." = "WGPU_BACKEND está definida e indica a API gráfica a usar; sem ela, o FigCraft escolhe sozinho."
 "Warm" = "Quente"
 "Watch" = "Relógio"
 "Wavy" = "Ondulado"
diff --git a/crates/ui-egui/locales/zh-Hans.toml b/crates/ui-egui/locales/zh-Hans.toml
index d1887735..70a05c5f 100644
--- a/crates/ui-egui/locales/zh-Hans.toml
+++ b/crates/ui-egui/locales/zh-Hans.toml
@@ -459,6 +459,7 @@ status = "draft — needs native review"
 "Fade" = "褪色"
 "False" = "假"
 "Fetching from the server…" = "正在从服务器获取…"
+"FigCraft couldn't open its window: {error}" = "FigCraft 无法打开窗口：{error}"
 "File" = "文件"
 "File name" = "文件名"
 "File published" = "文件已发布"
@@ -570,6 +571,7 @@ status = "draft — needs native review"
 "Hue" = "色相"
 "Hug" = "适应"
 "Hug contents" = "适应内容"
+"If it keeps happening, please report it at {link} with this message." = "如果问题持续出现，请附上此消息到 {link} 报告。"
 "If" = "如果"
 "If {condition}" = "如果 {condition}"
 "Ignore auto layout (absolute position)" = "忽略自动布局（绝对定位）"
@@ -1325,6 +1327,8 @@ status = "draft — needs native review"
 "Update plugin" = "更新插件"
 "Updated {components} and {styles}" = "已更新 {components} 和 {styles}"
 "Updated {name}" = "已更新 {name}"
+"Updating the graphics driver often helps. To use OpenGL only, start FigCraft from a Command Prompt with:" = "更新显卡驱动通常会有帮助。若只想使用 OpenGL，请在命令提示符中这样启动 FigCraft："
+"Updating the graphics driver often helps. WGPU_BACKEND (vulkan, gl, metal) names another graphics API to try." = "更新显卡驱动通常会有帮助。可用 WGPU_BACKEND（vulkan、gl、metal）指定另一个图形 API 来尝试。"
 "Uploads this file to a FigCraft server and keeps this tab in sync with it. You get a link to edit and a link to view." = "将此文件上传到 FigCraft 服务器，并使此标签页与之保持同步。你会获得一个编辑链接和一个查看链接。"
 "Uppercase" = "大写"
 "Use a fixed value" = "使用固定值"
@@ -1366,6 +1370,7 @@ status = "draft — needs native review"
 "Visibility" = "可见性"
 "Visible" = "可见"
 "Vivid" = "鲜艳"
+"WGPU_BACKEND is set and names the graphics API to use; unsetting it lets FigCraft choose." = "已设置 WGPU_BACKEND，它指定了要使用的图形 API；取消设置后由 FigCraft 自行选择。"
 "Warm" = "暖调"
 "Watch" = "手表"
 "Wavy" = "波浪线"
diff --git a/crates/ui-egui/src/dialogs.rs b/crates/ui-egui/src/dialogs.rs
index 221ee636..5f51a610 100644
--- a/crates/ui-egui/src/dialogs.rs
+++ b/crates/ui-egui/src/dialogs.rs
@@ -15,6 +15,39 @@ use crate::theme::{ACCENT, Tokens, regular, semibold};
 
 pub const VERSION: &str = env!("CARGO_PKG_VERSION");
 
+/// Where a report goes.
+const ISSUES: &str = "https://github.com/storytold/figcraft/issues";
+
+/// What the desktop app says when its window couldn't open with `error` (no frame was drawn: the
+/// language is the one [`i18n::set`] picked from the preferences). `backend_set`: `WGPU_BACKEND`
+/// named the graphics API, so the hint is to unset it rather than to try another one.
+pub fn window_failed(error: &str, backend_set: bool) -> String {
+    let hint = if backend_set {
+        tr("WGPU_BACKEND is set and names the graphics API to use; unsetting it lets FigCraft choose.").to_string()
+    } else if cfg!(windows) {
+        // Direct3D 12 and OpenGL are both offered, but wgpu keeps the Direct3D 12 adapter it picked
+        // even when its device then fails, so naming OpenGL alone can still help.
+        format!(
+            "{}
+
+set WGPU_BACKEND=gl
+figcraft.exe",
+            tr("Updating the graphics driver often helps. To use OpenGL only, start FigCraft from a Command Prompt with:")
+        )
+    } else {
+        tr("Updating the graphics driver often helps. WGPU_BACKEND (vulkan, gl, metal) names another graphics API to try.").to_string()
+    };
+    format!(
+        "{}
+
+{hint}
+
+{}",
+        trf("FigCraft couldn't open its window: {error}", &[("error", &error)]),
+        trf("If it keeps happening, please report it at {link} with this message.", &[("link", &ISSUES)])
+    )
+}
+
 /// A dialog window, centred.
 pub(crate) fn window<'a>(title: &'a str, ctx: &Context) -> egui::Window<'a> {
     floating(title, ctx).anchor(Align2::CENTER_CENTER, vec2(0.0, 0.0))