FreemindQL does not work on Mountain Lion 10.8
Workaround (at least for 1.0.0-RC4):
In a Terminal run these commands:
ln -s /Applications/FreeMind.app/Contents/Java /Applications/FreeMind.app/Contents/Java/jibx
ln -s /Applications/FreeMind.app/Contents/Java /Applications/FreeMind.app/Contents/Resources/Java/lib
Maybe a qlmanage -r after that is needed...
Voila! Should be easy to fix for the Java developers! Would like to get credits from them :-)
(Please see https://sourceforge.net/p/freemind/discussion/22102/thread/16930d11/#6adc for the full description)