I just had an issue coming from OSX where Apple did its stupid embed-metadata-as-a-separate-pseudo-hidden-file thing. THe upload reported as successful, but the file listing had a telltale __MACOS/.../filename.png entry which I can only guess confused the back-end system. Once I popped a ls [email protected]
to find the offenders and an xattr -d to kill the extended data, the manual showed right up.
make sure you chose the right name when you uploaded it. I have put quite a few up and they always appear right away when they are successful.