Are you updated to FMax 4.1.0.50 ? There are a whole bunch of updates between the original download and the latest, including AcquireStar fixes.
For Win 10, you'll want to install ALL the updates including anniversary and ALL the cumulative updates. Don't do it part way, get on the latest, it finally seems stable.
I suggest you spend some time on the FMax forum for help on this, here: http://ccdware.infopop.cc/eve/forums/a/frm/f/5817002276