Okay this is something new.
I have had my asiair pro for a couple of years now, on my Ioptron cem25ec with a WO Z61ii, ZWO EAF, ZWO EFW, ASI2600MC pro with ASI120MC-S. Everything has worked and played well together until recently. I have the latest software update(s) for the ASI air pro installed on my iPad.
The other night, after going through the normal routine balancing, polar alignment, focusing, and guiding. After finding my target inside of the ASIair pro with the GoTo feature, it would never slew go to the target position. It would not even move (although the screen indicated that it was moving to the correct position and trying to center several different times). However, I was able to still control my mount through the 4 arrow key (under the preview screen) and asiair pro continued to recognize my ioptron CEM 25EC like always. I shut down rebooted restarted everything four times that night, before finally giving up! Any suggestions or anyone else having this problem, not slewing to the target via GOTO screen feature. Oh also, Yes, I have turn off the DST on the Hand Control too.