Matlab OSX JAVA
From UABgrid Documentation
Issues with MATLAB on OSX after Java Updates
Mac OSX 10.6.x - Feb 2013
The latest update to OSX 10.6 (Update 12) updates Java to a new version that has an issue known to cause problems with 'matlabpool' on the local configuration especially with R2011b and older. Please upgrade the OS to 10.7 or use a newer version of Matlab (R2012a or newer) which have workarounds for the same.
MAC OSX 10.7.x -March 2013
Java Update 17 - does not allow MATLAB (2012a,b and 2013a) to be installed on OSX Please do not update JAVA if you wish to install new versions of MATLAB till a patch from the mathworks has been found.
Status: Contacted Mathworks support