Hi Frederik,
thanks for your quick reply to my comment under the topic "nothing happens".
After a reinstall of the Java for OS X 2013-004 Update Nodebox3 works like charm again!
The Java for OS X 2013-004 Update can be found here: http://support.apple.com/kb/DL1572
At the time you answered, i found the info to reinstall the Java for OS X 2013-004 Update in the topic
"Nodebox 3 unusable on Mac OS 10.6 after installation of Apple-updates".
Thanks a lot. I just posted it here as a new thread to safe someones time and while the other thread was closed
by you at the time i was able to correct my post or to give a positive feedback that it works again.