Mail hangs on eps attachments

[cudaboots]

Hi. I recently began having the problem of Mail hanging when I try to attach an Illustrator eps file. I used to be able to drag-n-drop the file onto the message and it would attach just fine. Now, whether I use the attach button or drag-n-drop, I get the endless spinning "beach ball". I am using OS X 10.4.11 with all updates done.