Can't upload?

I tried to upload a Litestep theme, but it keeps saying my file isn't uploading, because I have to submit a skin file. Uhmmmm... Litestep doesn't have a skin file. I did, however, put an .lsz file and a .jpg screenshot file. It goes through the little progress bar of uploading it, but afterwards, it says it's processing. After that, it says it failed to upload. I tried it twice, and it did it both times. Any idea what's happening? Or does nobody care, because it's Litestep? LoL