diff --git a/module/extension/lang/de.php b/module/extension/lang/de.php
index 37e84cea35..441209015c 100644
--- a/module/extension/lang/de.php
+++ b/module/extension/lang/de.php
@@ -120,3 +120,4 @@ $lang->extension->errorConflicts               = 'Konflikt mit “%s”!';
 $lang->extension->errorDepends                 = 'Benötigte Erweiterung wurde nicht installiert oder die Versionen passen nicht:<br /><br /> %s';
 $lang->extension->errorIncompatible            = 'Inkompatibel mit dieser Version von ZenTao.';
 $lang->extension->errorUninstallDepends        = '“%s” benötigt für diese Erweiterung. Bitte nicht installieren.';
+$lang->extension->errorExtracted               = 'The package file %s extracted failed. The error is:<br />%s';
diff --git a/module/extension/lang/en.php b/module/extension/lang/en.php
index e96cf718b1..f317c8c536 100644
--- a/module/extension/lang/en.php
+++ b/module/extension/lang/en.php
@@ -120,3 +120,4 @@ $lang->extension->errorConflicts               = 'Conflicted with “%s”!';
 $lang->extension->errorDepends                 = 'Dependent extension has not been installed or the version is incorrect:<br /><br /> %s';
 $lang->extension->errorIncompatible            = 'Incompatible with your ZenTao.';
 $lang->extension->errorUninstallDepends        = '“%s” is dependent on this extension. Please do not uninstall it.';
+$lang->extension->errorExtracted               = 'The package file %s extracted failed. The error is:<br />%s';
diff --git a/module/extension/lang/fr.php b/module/extension/lang/fr.php
index deded8b1e3..4ab32b1f5e 100644
--- a/module/extension/lang/fr.php
+++ b/module/extension/lang/fr.php
@@ -120,3 +120,4 @@ $lang->extension->errorConflicts               = 'Conflit avec “%s”!';
 $lang->extension->errorDepends                 = "L'extension dépendante n'a pas été installée ou sa version est incorrecte :<br /><br /> %s";
 $lang->extension->errorIncompatible            = 'Incompatible avec votre version de ZenTao.';
 $lang->extension->errorUninstallDepends        = '“%s” est nécessaire pour cette extension. Veuillez ne pas installer.';
+$lang->extension->errorExtracted               = 'The package file %s extracted failed. The error is:<br />%s';
diff --git a/module/extension/lang/vi.php b/module/extension/lang/vi.php
index a7429e6497..f93637a70b 100644
--- a/module/extension/lang/vi.php
+++ b/module/extension/lang/vi.php
@@ -120,3 +120,4 @@ $lang->extension->errorConflicts               = 'Conflicted with “%s”!';
 $lang->extension->errorDepends                 = 'Dependent extension has not been installed or the version is incorrect:<br /><br /> %s';
 $lang->extension->errorIncompatible            = 'Incompatible with your ZenTao.';
 $lang->extension->errorUninstallDepends        = '“%s” is dependent on this extension. Vui lòng do not uninstall it.';
+$lang->extension->errorExtracted               = 'The package file %s extracted failed. The error is:<br />%s';
diff --git a/module/extension/lang/zh-cn.php b/module/extension/lang/zh-cn.php
index 12e078b509..5f30b85c27 100644
--- a/module/extension/lang/zh-cn.php
+++ b/module/extension/lang/zh-cn.php
@@ -120,3 +120,4 @@ $lang->extension->errorConflicts               = '与插件“%s”冲突！';
 $lang->extension->errorDepends                 = '以下依赖插件没有安装或版本不正确：<br /><br /> %s';
 $lang->extension->errorIncompatible            = '该插件与您的禅道版本不兼容';
 $lang->extension->errorUninstallDepends        = '插件“%s”依赖该插件，不能卸载';
+$lang->extension->errorExtracted               = '包文件 %s 解压缩失败，可能不是一个有效的zip文件。错误信息如下：<br />%s';
diff --git a/module/extension/lang/zh-tw.php b/module/extension/lang/zh-tw.php
index 1d0ccffd03..67ef957ee1 100644
--- a/module/extension/lang/zh-tw.php
+++ b/module/extension/lang/zh-tw.php
@@ -120,3 +120,4 @@ $lang->extension->errorConflicts               = '與插件“%s”衝突！';
 $lang->extension->errorDepends                 = '以下依賴插件沒有安裝或版本不正確：<br /><br /> %s';
 $lang->extension->errorIncompatible            = '該插件與您的禪道版本不兼容';
 $lang->extension->errorUninstallDepends        = '插件“%s”依賴該插件，不能卸載';
+$lang->extension->errorExtracted               = '包檔案 %s 解壓縮失敗，可能不是一個有效的zip檔案。錯誤信息如下：<br />%s';