What does the message say? Are you using a web browser or AOL software client? When exactly do you get the error message?
Are your images/files too big for AOL? I use AOL everyday and don't have an issue unless the files are too big or still 16 bits!
Other people asked questions on similar topics, check out the answers they received:
Other people asked questions on various topics, and are still waiting for answer. Would be great if you can take a sec and answer them