Thanks Irad, that was simple enough to fix. Somehow I missed having to select a radio for PTT. I made the selection and now both PTT and CAT works. 73, Wayne

The computer hasn't shown that screen since, so I don't really know if the error message was connected to VarAC or not. However, I still don't have PTT. I don't know what you meant by "The VarAC Directory. Run over the existing file"?