Somebody asked me how to change Java version...
I know how to do that on Mac:
Open Java Preferences by going to your Applications folder ("/Applications") and into the Utilities folder within ("/Applications/Utilities"); Java Preferences can be found there by default (therefore unless you moved it). [Or you could just use spotlight search...]
Java 6 should come with the Mac. Therefore un-tick the box with Java 7 and make sure that the box(es) with Java 6 are ticked.
Now it should work!
If you have a Windows, then just look up "How to change Java version" on Google (or another search engine) and I'm sure you'll find a solution!
Oh and be sure to re-enable Java 7 if you use other applications that may require it...
Hope it helped!