Apparently a recent virus signature update for MSE/Windows Defender caused this. The latest from today (1.5.) shouldn’t be affected anymore. Tried with MSE (Win 7) and Defender (Win 8).
I happened the same thing yesterday.
Windows defender, repeatedly broke the vorpx program, and after several relocations.
After disabling antivirus and clean reinstallation of vorpx today seems to work “well”,.
at least for now.
Now, I’m not sure my antivirus enabled, for fear of breaking it again.
MSE seems to have borked mine too. I thought I saved the install file but apparently got excited to start using it and forgot! I’m not 100% sure the issue was MSE, but my vorpx.exe suddenly dissappeared and it happened while MSE was doing a scan.