BS Player help

I use BS Player to cap things, but one function has never worked for me - the cap "what you see" bit. I'll open what I want to cap, and start capping, but no matter what I do, it always caps as the original image size, not the desktop size. I've checked time and time again, and I have it set right. I'm not sure if this will help or not, but here is a cap of my settings.

Any and all help is very appreciated. :)

(This was crossposted to cap_it, but it was about a month ago, and I didn't get ANY replies, so don't kill me =x)