[TxMt] Textmate/Latex: Citation Inclusion does not work

Hello together, I'm facing quite a strange problem with the citation inclusion in Latex (->Latex ->Insert ->Citation Based on current word).

I always get the following error:

/tmp/temp_textmate.zgtzns:4: command not found: kpsewhich -show-path=bib

After the error-message, the right citation key is inserted. But i always have to delete the text before (the error message), and this is very uncomfortable.

I am working on a project, and the problem only occurs in the "child"-documents, in my Master-File everything the citation inclusion works very fine.

I set the the shell variable for the master-file as well as for the Bib-file.

I'm quite confused what the problem could be and i hope somebody of you could help me, Thanks a lot!