Error After Upgrading
 

I just upgraded usacarry.com to vBulletin® Version 3.8.5 and I'm getting a lot of people telling me they are getting:

Quote:
Your submission could not be processed because a security token was invalid.

If this occurred unexpectedly, please inform the administrator and describe the action you performed before you received this error.

When trying to mark forums read. Anyway to fix this?