Exporting Problems

So I’m currently working on a game that will be running off of the Unreal Engine (made using the UDK). The kit uses .psk files (and I believe .ase files, not sure as I’m mostly just responsible for making models with blender). The problem I’m facing is that I have an addon to convert .blend files to .psk, but it doesn’t seem to work. I finally get it to a point where there are no error messages, but when I say export, it just pauses for a long time, and then closes the screen as if it were a successful export, but there is no file. I’m having the same problem with a .ase exporter, but it doesn’t even pause when I tell it to export. Any help would be appreciated.

P.S. I have no problem exporting other formats, such as .3ds.

Edit: New information. I opened the console this time and found an error message.
"RuntimeError: maximum recursion depth exceeded in comparison

location:<unknown location>:-1

location:<unknown location>:-1
BLI_dynstr_append text too long or format error."