Problem with 5.5

I have a problem with V5.5 !!!
if I use it in simulator mode everything is ok, but if I connect with the gps (I use a UBLOX C099-F9P via bluetooth which works perfectly with all previous versions) it happens that when I open AgIO and configure the ports for a few seconds then AgIO yes freezes and I have to restart !!!
It happens on a generic notebook with windows 7 and also a professional HP tablet with windows 10 and i5 CPU same problem.