How to fix startup failure in matlabrc on Mac OS X

Attempting to build interface between NASA's GMAT (General Mission Analysis Tool) and MATLAB. The GMAT build starts up MATLAB and encouters a start-up in MATLAB due to the matlabrc file. The error message follows.

-- Launching Matlab to build CInterface (release) thunk files...patience is a virtue...

< M A T L A B (R) >
Copyright 1984-2015 The MathWorks, Inc.
R2015b (8.6.0.267246) 64-bit (maci64)
August 20, 2015

For online documentation, see http://www.mathworks.com/support
For product information, visit www.mathworks.com.

Warning: Executing startup failed in matlabrc.
This indicates a potentially serious problem in your MATLAB setup, which should be resolved as soon as possible. Error detected was:
MATLAB:undefinedVarOrClass
Undefined variable "com" or class "com.mathworks.jmi.ClassLoaderManager.getClassLoaderManager".
> In matlabrc (line 230)

This script builds the GMAT interface prototype files and places them in the appropriate GMAT folder for Matlab use.