New Draftsight 2019 install Model/Paperspace crashes

Hi guys, Any idea why a new, registered installation of draftsight on W10 would have a constant crash of modelspace/paperspace? The old trial version never did this. The cursor works everywhere on the screen except where it's most needed, and the drafting space doesnt seem to refresh. I read autosave might be a cause, so I've disabled that and resatered the programme.

Thnaks!