Technically, no-one is supposed to host any modifications, we (and only we, as far as anyone knows) have permission from IP to operate as a repository for them.
If you'll check your license agreement (especially the couple of sentences dealing with modifying your ubb), you'll see what I mean.
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.