I am having trouble with this, too.
Mac OS X.3.9 TextMate version: 1.5.1 v985 Language: Python
I checked out the Python and Source bundles from svn as per the wiki instructions, making sure to set the LC_CTYPE env variable.
If I select a block of code, and hit Cmd-/ (why is there no menu entry for toggling comments on a region?), the selected block is replaced by the following text:
/tmp/temp_textmate.BFzWMP:26: undefined method `values_at' for {:end=>"", :no_indent=>nil, :start=>"# ", :mode=>"line"}:Hash (NameError) from /tmp/temp_textmate.BFzWMP:19:in `each' from /tmp/temp_textmate.BFzWMP:19
It doesn't matter what the contents of the selected block of text are.
Any help will be appreciated.
Cheers, --Dave