When I use Admin panel -->Group-->Attachments,then choose one which I want to enable Attachments,click "Save" button, some Exception like that:
An error has ocurred. For detailed stack trace, please see the page's source code.
Base table or view not found message from server: "Unknown table 'jforum_role_values' in MULTI DELETE
But I'm sure that my mySQL database has the table. [originally posted on jforum.net by yitao1982]