How many were you trying to do? When I asked on the previous page about putting up a screenshot before you submitted there was only the one smilie in the picture. We've been racking our brains on why one smilie won't submit.
The number of smilies in the folder itself makes no difference. But if you were filling in the info for 20 at a time and trying to get them to install then that was probably the issue and would have been worth mentioning.