git-wbdiff.sh aborts with weird error

[tpo]

I'm in a git repo directory:

$ git-wbdiff.sh
Traceback (most recent call last):
File "/home/tpo/bin/wbdiff.py", line 197, in
left = file_reader1(leftfilename).readlines()
IOError: [Errno 2] No such file or directory: ''

PS: and, as noted on g+ your old university email is bouncing