Ihave the about the same issu , at the end of the flighy after ,end flight and send pirep , msfs crash. when start msfs the next time it ask start normal orin safe mode.
using an other acars fron other virtual no problems.
in windows event/error logs i see a error for couatl .exe(gsx) and fsuipc.exe.
where can i find the acars log.