This crash works the same way AIM Filter/AIM Suite's Font Crash works. You send the person you want to crash a bunch of IM's with a bunch of diffrent fonts in them...each font must be seperated by a character (eg. 'a'). You need about a hundred fonts, and they must be sent in multiple IM's. The best way to do it is through VB. After sending numerous diffrent fonts, the recipiant of the IM will recive an error message saying, 'Ran out of Font resources for this window, fonts may not look as intended' this is key, after the user recives this error (they will only recive it once, for each window.) you send a horizontal line... (eg. press control h) the horizontal line crashes the IM window, and of course, AIM. This exploit can only be used to crash version 4.7 and below, but you can use it (minus the horizontal line) to make the error message appear on any AIM including 4.8, it also works in chatrooms.