Pempro Polar Align Wizard and SGP Issue

PEMPro.
Hi.
I have a AstroPhysics mount I have been trying to map about 5 to 6 worm cycles in PEMProto improve (smooth out) the tracking.
Everything goes fine until at some random time between two and four cycles I get a pop up message: Camera busy (everything stops). Or. The Windows message: SQpro has stopped working and will close the program. Neither message can be overridden and when the program closes all the information that has been gathered is lost.
As you can imagine this is a bit frustrating as there could be 20 to 30 min. of information lost each time I try, and it has never completed all the required cycles.
The problem seems to be similar to the long discussion here, back in January, with crashes during calibration acquisition. However that seemed to be sorted out. I have tried one of the fixes that was used at that time i.e. delaying the time between each exposure by 2 sec. The subframes (1sec.) are quite small 100x100. Bin 1x1. Camera SXVR-H694.
I do not have the logs as this all happened couple of weeks ago and I just gave up trying. But this seems to link in to this ongoing discussion.
Thanks. Adrian