Have asked this in the SGPro forum (but as yet no resolution) - wondered if any users here had similar experiences: I use an ST2000XM + CFW8 under SGPro - I can't get SGPro to report the filter wheel position at all (resulting in SGPro thinking that it has changed filter each frame, and thus trying to refocus each time...). The filter wheel reads out position correctly in CCDSoft, and when I ask it to change in either package, it does so correctly. Any ideas what could be wrong? The SGPro author says that the SBIG emulators are generally good and don't tend to show issues like this (and I'm sure other users also use the software in the same way) - there's nothin logged about timeouts, etc. I'm a bit stumped as to what could be wrong, or how to go about diagnosing from here - does the SBIG driver have any debugging options?