[Forum] After upgrade, some members can't view threads

[vivamexico55]

I have the default registered usergroup and a "pro" registered usergroup (with more features available).

After the upgrade to 4, some of the "pro" users have reported that they're missing permissions to do a lot of basic stuff, but the worst is that they have no permission to view threads or thread lists, yet somehow they can send private messages.

About 20 out of 800 pro users have contacted me about this, but I'm worried that there's a lot more that don't know what to do.

Any idea how to fix this? It's driving me crazy. Some seem to have been fixed by transferring back to the default registered usergroup and then back again to the "pro" version, but it seems iffy.

[Carnage-]

My first suggestion to you would simply be to edit a forum permission for the pro group. This could be as simple as removing the ability to view a forum and restoring it again.