problems installing watermark master

i'm so fed up with this prog.

I've had a previously installed trial version. I guess it installed some registry files on my system which don't allow me to get the patch to work. i mean.. everything is patched and all, but still all my videos get watermarked with their stupid title at the top...

what can i do to remove all of it's remains so i can have a clean install+patch?

someone got it fixed for themselves and can help me???

i have the same problem. can someone help?