Autocenter quickly aborts

I changed cameras, re-entered settings, I get an image, plate solve and sync works, but when I slew to an object and hit “center” it quickly aborts, “auto center failed”; no error message? Its is a AP Mach1 mount, QHY247C camera,


The problem was that I had the"select filter" box checked after I had taken off the EFW for the Hyperstar. An error message would have been nice though!