Several fixes.

diff --git a/maintenance/language/checkLanguage.inc b/maintenance/language/checkLanguage.inc
index 0571bda..cf425e9 100644 (file)
--- a/maintenance/language/checkLanguage.inc
+++ b/maintenance/language/checkLanguage.inc
@@ -358,9 +358,14 @@ class CheckExtensionsCLI extends CheckLanguageCLI {
                                }
                        }
                } else {
-                       $group = MessageGroup::getGroup( 'ext-' . $extension );
-                       $extension = new extensionLanguages( $group );
-                       $this->extensions = array( $extension );
+                       $group = MessageGroups::getGroup( 'ext-' . $extension );
+                       if( $group ) {
+                               $extension = new extensionLanguages( $group );
+                               $this->extensions = array( $extension );
+                       } else {
+                               print "No such extension $extension.\n";
+                               $this->extensions = array();
+                       }
                }
        }