Pysmell error when invoking completion in Vim (^X^O)

[rohdef]

What steps will reproduce the problem?

1. invoke omnicompletion by ^X ^O in Vim

What is the expected output? What do you see instead?
I expected to see Omnicompletion options. I instead get a lot of errors in
Vim. I'm attaching a screenshot of the error.

What version of the product are you using? On what operating system?
Pysmell v.0.7.3, Python 2.6.2, Vim 7.2, Vista Home Premium SP1

Please provide any additional information below.
I am attaching a screenshot of the error in Vim since I can't copy/paste
it.

http://code.google.com/p/pysmell/issues/detail?id=31