OpenOffice Extension not working on Linux

system: openSuSE 10.2, 2.6.18.8-0.5-default
python: 2.5
OOo...: 2.3.0

When I try to install the Zotero Extension via the Extension Manager I get the following error message when "ZoteroRPC.py" is about to be loaded:

ImplementationRegistration :: registerImplementation() - The
Service com.sun.star.loader.Python cannot be initiated.

all other components of the extension (*.xcu) seem to initiate correct.

Any suggestions?
Thanks!

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