ok i updated the zip when i replied previously (4 replies before this) and the code you posted is not from the updated version. so... redownload the zip and upload ubb_poll_lib.cgi.
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.