Hi Hans-Joerg,
 
I've just migrated to Leopard, and I have the following problem.
If I drag'n'drop a pdf file from the Finder to a LaTex doc I get the
following error:

/System/Library/Frameworks/Ruby.framework/Versions/1.8/usr/lib/ruby/
1.8/pathname.rb:205:in /bin/bash: -c: line 0: syntax error near
unexpected token `('
/bin/bash: -c: line 0: `dup': can't dup NilClass (TypeError)'initialize'
                               from /tmp/temp_textmate.gqGtWt:7:in

I imagine that this message is a result of you trying to drag and drop the pdf into an unsaved TextMate file: the command looks to insert a relative path into your latex file but there's nothing kicking around when it asks for the current location (ie of the latex file you're editing). Hence the rather rude message. I guess this should probably be changed to present a friendlier face in such a situation, but my ruby's (still)  weaker than it should be...

Cheers,
Paul