diff --git a/administrator/language/en-GB/en-GB.lib_joomla.ini b/administrator/language/en-GB/en-GB.lib_joomla.ini
index f158f0ef3f83e..712abb0b23a9e 100644
--- a/administrator/language/en-GB/en-GB.lib_joomla.ini
+++ b/administrator/language/en-GB/en-GB.lib_joomla.ini
@@ -416,6 +416,10 @@ JLIB_HTML_UNSETDEFAULT_ITEM="Unset default"
 JLIB_INSTALLER_ABORT="Aborting language installation: %s"
 JLIB_INSTALLER_ABORT_ALREADYINSTALLED="Extension is already installed"
 JLIB_INSTALLER_ABORT_COMP_BUILDADMINMENUS_FAILED="Error building Admin Menus"
+JLIB_INSTALLER_ABORT_COMP_COPY_ADMIN_FILES_TO_COPY_FAILED="Error on Installation/Upgrade: Could not copy some administrator files"
+JLIB_INSTALLER_ABORT_COMP_COPY_SITE_FILES_TO_COPY_FAILED="Error on Installation/Upgrade: Could not copy some site files"
+JLIB_INSTALLER_ABORT_COMP_FIND_ADMIN_FILES_TO_COPY_FAILED="Error on Installation/Upgrade: Could not find some administrator files to copy"
+JLIB_INSTALLER_ABORT_COMP_FIND_SITE_FILES_TO_COPY_FAILED="Error on Installation/Upgrade: Could not find some site files to copy"
 JLIB_INSTALLER_ABORT_COMP_INSTALL_COPY_SETUP="Component Install: Could not copy setup file."
 JLIB_INSTALLER_ABORT_COMP_INSTALL_CUSTOM_INSTALL_FAILURE="Component Install: Custom install routine failure"
 JLIB_INSTALLER_ABORT_COMP_INSTALL_MANIFEST="Component Install: Could not copy PHP manifest file."
diff --git a/libraries/cms/installer/installer.php b/libraries/cms/installer/installer.php
index 72eca13d875e4..52c1fee7609d9 100644
--- a/libraries/cms/installer/installer.php
+++ b/libraries/cms/installer/installer.php
@@ -394,7 +394,7 @@ public function abort($msg = null, $type = null)
 
 		if ($debug)
 		{
-			throw new RuntimeException('Installation unexpectedly terminated: ' . $msg, 500);
+			throw new RuntimeException(JText::_("JLIB_INSTALLER_ABORT_DEBUG") . ' ' . $msg, 500);
 		}
 
 		return $retval;