509, huh? That's interesting, I believe Vash's tools only exported 402. I wonder what those extra ones are.
Anyway, if it's not writing them to your output path, the path must be set up incorrectly somehow, or you're out of disk space, or maybe if you're running Vista it's a write permission issue that could be fixed by running GitMO as admin. Could be a lot of things, so unless you can provide more specific information about your path settings and such, I can't really help you.