First of: Thanks a lot to the Pixologic team for another free upgrade. This is just great!
Win 7 Professional, 64bit, Kaspersky 12 (and lots of other software which could have caused this)
Problem probably solved:
I had the Kasperky-Issue, and as I don’t think it’s that great an idea to deactivate antivirus i just excluded the pixologic folder from checking. Afterward the install did work just fine for me, and I was able to activate and to test the new zbrush. Only, this morning when i started my computer zbrush.exe had vanished. Everything else was still there, I think, but the executable wasn’t. No message, nothing in quarantine.
Reinstall. New Activation. Everything seemed to work fine. After a restart zbrush.exe was missing again. No message whatsoever, nothing in quarantine.
Only this time i had made a copy of the exe before which I copied back to zbrush.exe. Worked fine. After that I did one restart and it’s still there now. I can start zbrush without any problem (i’m not sure if it stays that way).
So if anybody has the same problem …
But I’m not that sure that it really has to do with Kaspersky. It’s just really, really strange.