AOL Instant Messenger warnings

In AIM, whenever I or a friend try to warn each other (Don't ask), it always says, "Warning of <Screenname> is not allowed." Can this be fixed? I've tried following all the rules for warning someone in the help file, but it won't work. Anyone else have this problem?

I've seen this problem if the users are using Trillian. I know you can only warn each other a max of 3 times I think, before you have to wait a while. I've gotten this many times when I try to warn those spammers who try to get you to click on their links. Not sure why, but it happens.
So at least you aren't the only one.