Traceback (most recent call last): File "\pdo_import.py", line 142, in execute bm.faces.new(indicies) ValueError: faces.new(verts): face already exists location: <unknown location>:-1

[ningningazz]

Traceback (most recent call last):
File "\pdo_import.py", line 142, in execute
bm.faces.new(indicies)
ValueError: faces.new(verts): face already exists

location: :-1

[Coreforge]

Which blender version were you using (and which pepakura version was the file saved with, if you know that)?
I just quickly tried a test model exported with pep5 and it still worked, so I don't think pep5 has broken anything (too much) so far.

If it's a public file, would you be able to share it? Otherwise, I can just add a try-except block to keep the importer from crashing.