audcity Recovery Wont fix issue

[Zukny]

what happened:

We made a recording a week ago, today we tried to open the audio back up; however, the audacity file is showing Okb, but all the AU files are still there, So i then began Making a specific folder Matts AU folder, and I placed all the AU files in that folder. At this point i Turned on the Audacity recover, changed it to 1 for mono and click start recovering.
Automatically i got this message
Traceback (most recent call last):
File "audacity_recovery.py", line 157, in ?
File "audacity_recovery.py", line 92, in MainLoop
ValueError: invalid literal for int(): 000001b
Traceback (most recent call last):
File "audacity_recovery.py", line 157, in ?
File "audacity_recovery.py", line 92, in MainLoop
ValueError: invalid literal for int(): 000406f

I then tried it with the original files, trying to see if i could do one folder at a time.. However this didnt work either..

What could i do?