I looked somewhere on the internet to find out why I get this problem and it looks like is a problem of python versions, but I didn't find a way to fix it.. Here it is the error, maybe someone else got the same problem here... Thanks
Traceback (most recent call last): File "", line 7, in File "/Users/andrea/Library/Application Support/TextMate/Pristine Copy/Bundles/Python.tmbundle/Support/DocMate/docmate.py", line 7, in import urllib2 File "/opt/local/Library/Frameworks/Python.framework/Versions/2.5/lib/python2.5/urllib2.py", line 91, in import hashlib File "/opt/local/Library/Frameworks/Python.framework/Versions/2.5/lib/python2.5/hashlib.py", line 133, in md5 = __get_builtin_constructor('md5') File "/opt/local/Library/Frameworks/Python.framework/Versions/2.5/lib/python2.5/hashlib.py", line 60, in __get_builtin_constructor import _md5 ImportError: No module named _md5