To upgrade from a prior version, all you probably need to do is replace the subroutines in ubb_library.pl and grab the latest version of the addon script!
Donate to UBBDev today to help aid in Operational, Server and Script Maintenance, and Development costs.
Please also see our parent organization VNC Web Services if you're in the need of a new UBB.threads Install or Upgrade, Site/Server Migrations, or Security and Coding Services.