I have 3 scanners running ProScan that run 24/7. SDS200, 536 and a 780 and have not a problem till now. For some reason I can now longer see the Virtual Display on my 2nd monitor or anywhere since Saturday. The editor shows when I open ProScan but that's all. I tried my laptop with a SDS100 and no problem. I undid latest Win 11 update and no luck. Reinstalled ProScan didn't help ether