I installed on a new PC about a week ago and activated it and it worked fine. Today it will not start. Have uninstalled and re-installed - including deletes from registry as per instructions. Still won't start. Need help as this isn't good enough when I've paid the subscription.

System is:

win10 64 bit

32GB RAM

running Mcaffee which I've also switched off. 

NVIDIA Quadro P520 - also tried switching to integrated graphics

Tried running Draftsight as administrator too