Please use a "normal" archiving format, like zip. Using something weird, like rar, will make people less likely to download the code.
It looks like you're running into MSVCs issue with files with the same name. At least that's my guess. It's technically a bug in MSVC. It's kind of a pain in the butt; I wish they'd fix it.
Edit: SiCrane... It is unholy how ninja-like you are!
Edit edit: @downvoter: care to expand on the reason behind the downvote? I'm not offended or anything, but I am puzzled about what deserved a downvote, and if there's something I can improve I'd like to know.