Latest version on sid errors

I run Debian sid along with Catfish built from latest bzr, and though the .deb builds fine, I encounter the following error when trying to run:

$ catfish
Traceback (most recent call last):
  File "bin/catfish.py", line 50, in <module>
    import catfish
  File "/usr/share/catfish/catfish/__init__.py", line 24, in <module>
    from catfish import CatfishWindow
  File "/usr/share/catfish/catfish/CatfishWindow.py", line 37, in <module>
    from catfish_lib import Window, CatfishSettings
ImportError: cannot import name CatfishSettings

I could not reproduce the error on my Xubuntu 13.10 VM, so I'm wondering if something's wrong/missing with my python on Debian or whether something's wrong with Catfish.