Updates:
Status: Invalid
Comment #1 on issue 1322 by pekka.klarck: Problem generating lib doc from a
java library
http://code.google.com/p/robotframework/issues/detail?id=1322
Robot Framework 2.5 and newer are not compatible with Jython 2.2. You should also consider upgrading your Robot Framework installation. Libdoc in bundled into RF 2.7 and newer which makes using it a lot easier. See, for example, UserGuide for more details.
