GhostScript Error and Setup Helper Crash

A few days ago pdf Creator stopped working. I would get to printer selection dialog, and the printer output (where it counts pages really fast), but no pdf Creator.

When trying to troubleshoot, it would not print any test pages, and result in an internal ghost script error, after choosing a file name and location.

I tried rolling back to older version, to no avail - same issues.

At some point, I started getting “Setup Helper.exe” crash notifications from Windows.