Problems importing blender files

Hello!

I've been having problems with the FBX importer. When importing models from blender it says the it can't convert it to FBX! I am using blender 2.49b and I did not have this problem a few days ago. I have some work arounds for now, but it is very inconvenient. I have also noticed that all the blender files that have already been imported can't have their import properties changed!

If anyone knows some importing trouble shooting, that would be great!

Thanks

-AJ

Why one of your tags says "2.54"? Have you installed Blender 2.5? If so then you have to make sure that the default association is with blender 2.49.