Install Java issue on Mac OSX - 20130626?

Created Fri, 12 Jul 2013 02:07:38 +0000 by epicycloid

epicycloid

Fri, 12 Jul 2013 02:07:38 +0000

I'm sure I've done something dumb, but for some reason I can't get MPIDE 20130626 to work on my Mac. I just did a new install, since an HDD replacement/system re-install, so an upgrade from a prior working environment that I was using before. With this new install, trying to build for an Arduino Uno or Mega (2560) I keep getting:

java.lang.NullPointerException
	at processing.app.debug.Compiler.compileLink(Compiler.java:705)
	at processing.app.debug.Compiler.compile(Compiler.java:229)
	at processing.app.Sketch.build(Sketch.java:1588)
	at processing.app.Sketch.build(Sketch.java:1565)
	at processing.app.Editor$DefaultRunHandler.run(Editor.java:1863)
	at java.lang.Thread.run(Thread.java:680)

Checking for my installed version of Java returns:

java -version

java version "1.6.0_51"
Java(TM) SE Runtime Environment (build 1.6.0_51-b11-457-11M4509)
Java HotSpot(TM) 64-Bit Server VM (build 20.51-b01-457, mixed mode)

Is it glaringly obvious to someone what's causing this issue?

Thanks