AIM file transfers not working

All of a sudden, for no reason I can figure out, I can no longer receive files from other AIM users. I haven’t changed anything that I can fathom having any sort of impact on this. I use AIM 5.9 with middleman installed. (I’ve had it for a few weeks now; this started just the other day.)

Anyone have any idea what could be up?

Mabye AOL changed some stuff? Perhaps a compatibility issue? Guess it depends on a few things.