When I open Acrobat 8 standard, it automatically starts opening files by itself. It goes until it gets to 50 and then gives me this error message. I click OK on the error message and it keeps returning as if it wanted to keep opening files. I can't close any of the files individually. I can close them all via Windows Task Manager. I'm running Windows XP Pro. I restarted my computer today for the first time in weeks and this is what I now get. Prior to the restart, no problems like this.
Try a search of the forum. I faintly remember such a thing being brought up before in the last month or two.