I had installed the netradio patch. Luckily, I saved a copy of the gbpvr dir before the patch, so I reverted to that one. But still, I have the same problem....
I tried the following: deinstall gbpvr, remove the gbpvr directory, re-install gbpvr and putting back my config.xml and gbpvr.db3, but the problem still persists....
I suspect its something to do with the submenus you've created. Delete them to put it back to a flat menu structure and I'm sure it'll start working again.