Give error message on failure to save a new app when editing

app.php

@@ -85,7 +85,7 @@ if (isset($_POST['submit']) &&
 		$msg = "Successfully created your application!" ;
 		header("Location: main.php?msg=$msg&success");
 		exit();
-	} else if(!$profile){
+	} else if(!$profile || (int)$appID == 0){
         $msg = "Error!" ;
         header("Location: main.php?msg=$msg&failure");
         exit();