"I use a system called aMember Pro." Do you by any chance have a member site running besides this as well? We do and have been having quite a bit of problems integrating the 3 parts (membersite, UBBT and aMember).
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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.