2.57 Unreal Export issues?

I’m just wondering what’s up with the .psk/.psa export add-on that came with Blender 2.57. I can’t seem to get it to export all the animations in the .psa file. Older versions of blender did this just fine. Is there something I’m missing here? The only information I could find on it seemed to be from a poorly translated page and I can’t follow it. Anyone else know what I’m talking about?