"Demo" screen keeps flashing

[Doutri]

I recently purchased and unlocked this game as part of a Humble pack, but I frequently get some screen with a bunch of text flashing during play. It takes a second to go away while the game keeps going, possibly making me lose. I see it saying something about a Demo. This isn't a demo!

Any way to get rid of that screen?

[Doutri]

I managed to take a screenshot of the problem. This pops up fairly frequently.

http://postimage.org/image/2thkvk1ic/

[MQQSE]

I have this same problem! It worked fine while I was playing the demo, and now that I actually BOUGHT it, it's giving me ****.

Specs:
Windows XP
3G RAM
Processor: AMD Athlon 64 x2 Dual Core 4200+, MMX, 3DNow
Graphics Card: GeForce 8400 GS, 512 MB

[Under Oath]

i dont think you can get rid of the screen but i will keep loking for an answer.

MQQSE - you specs have nothing to do with the problem. (they are amazing.)