Doesn't seem to work with 0.11rc2 due to dependency on TracWebAdmin? plugin (not a plugin in 0.11x).
2008-06-27 17:23:24,657 Trac[loader] DEBUG: Loading wikitopdf.web_ui from /opt-apps/svn/python/lib/python2.4/site-packages/TracWikiToPdf-2.0-py2.4.egg
2008-06-27 17:23:24,673 Trac[loader] DEBUG: Skipping "wikitopdf.web_ui = wikitopdf.web_ui": ("TracWebAdmin" not found)
2008-06-27 17:23:24,674 Trac[loader] DEBUG: Loading wikitopdf.formats from /opt-apps/svn/python/lib/python2.4/site-packages/TracWikiToPdf-2.0-py2.4.egg
2008-06-27 17:23:24,689 Trac[loader] DEBUG: Skipping "wikitopdf.formats = wikitopdf.formats": ("TracWebAdmin" not found)
2008-06-27 17:23:24,689 Trac[loader] DEBUG: Loading wikitopdf.wikitopdf from /opt-apps/svn/python/lib/python2.4/site-packages/TracWikiToPdf-2.0-py2.4.egg
2008-06-27 17:23:24,704 Trac[loader] DEBUG: Skipping "wikitopdf.wikitopdf = wikitopdf.wikitopdf": ("TracWebAdmin" not found)