Peter, Malcolm,
Today we gave a good test of APT with my wife under Win7. We were not be able to reproduce the problem
no matter what we tried. Maybe the issue was related to something that I changed after the beta was released?!?!
Let see how the final 1.40 will behave in your environment. BTW I just decided disable 'LV Stack' while Focusing panel is active, mainly because the stack pulses affect the FWHM reading and make it unusable...