There’s a few of us with that issue. Just waiting on a fix.
I have the same issue as @probablynot – his second issue:
Second, since upgrading, in the Admin area, I can no longer do anything for the forums. The menu over on the left side has no items under the Forums, Topics or Replies headings.
Thanks, I’ll look into that 
Sorry to “bump” this, but I was really hopeful that someone would be able to help 
