Type1 is a PITA
I got my first bug report today and that has led me to see that my code to handle Type1 fonts is more than a little fragile.
Right now, if you point it at .pfb files, then all should be well. I am trying to gather information about the other filetypes (like pfa and afm, pfm etc.) to see which ones I should bother with.
There will be a FP update once that's all done.
In the meantime, please let me have your error output as well as a listing of the folder/pog that caused the error. The more info I have about what you were doing when things went wrong, the better.
If fonts crash FP, you can also compress and send me the fonts that did the deed.