Patch 1.1 breaks securom - "Wrong disc inserted"

[dogmut]

After installing the 1.1. patch, I now get a "Wrong disc inserted" securom dialog. Game ran before the patch. I un-installed and re-installed with same results.

I found a NecroVisioN.exe on the DVD that I can run the game with but I'm assuming this is the original version (a small file with securom not built into it?).

Anything I can do to fix this so I can play with the patch?

Thanks