why is it there is no tab on the ACP. I tried installing your plugin to my car forum but I can't see the tab on the ACP...
you need to configure the admin permissions in the ACP to allow access to the specific portions of the MyShowcase System. ACP > USers and Groups > Admin Permissions > {username} > MyShowcase Tab > {enable some or all}
Also, please use the official support thread as the beta has long closed
http://community.mybb.com/thread-87424.html