I am facing a problem of getting Gephi (the visualization software) to run on my Mavericks. As you might ask, let me tell you, I have tried installing Java 6 from Apple's site but to no avail. Either the software doesn't start, or it won't show the graphs, or it will give nullpointerexception errors. The software is fine on a VMWare running Windows 8 though, but that's not the problem. The problem is getting Gephi to run in my Mac/Mavericks.
I had the same problem.
I had installed java 7 and Gehi didn't start, I got an error in the /vat/log/system.log
Exited with code: 2
At the end, I didn't uninstall java 7 and I installed java 6 from:
http://support.apple.com/kb/DL1572?viewlocale=en_US
It works!!!