This is a Registered Version of Prizmo version 1.0.1d2. I am repeating what I did with the demo version (Video: Prizmo 1.0.1.d2 - Blank 2nd Save) to see if the saved blank document happens. It does not. So the issue could be related to the watermark processing of the demo.

Prizmo 1.0.1d2 Registered Version - No Blank from Neil Boyd on Vimeo.