Can anyone explain why my MatLab is acting the way it is?

Everytime I start MatLab it displays the following. I have a program, written on a different computer, which I need to get running but this SEEMS to be preventing that from working-

C:\Program Files\MATLAB\R2012a\toolbox\local\pathdef.m: Cannot open file: permission denied.
Warning: MATLAB did not appear to successfully set the search path. To recover for this session of MATLAB, type "restoredefaultpath;matlabrc". To find out how to avoid this warning the next time you start MATLAB, type "docsearch problem path" after recovering for this session.
Warning: Duplicate directory name: C:\Program Files\MATLAB\R2012a\toolbox\local.
Warning: Initializing Handle Graphics 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 "graphics" or class "graphics.internal.initializeMATLABRoot".
Warning: Initializing Java preferences 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:UndefinedFunction
Undefined function 'usejava' for input arguments of type 'char'.
> In matlabrc at 113 
Warning: Failed to add default profiler filters. 
> In matlabrc at 168

I've tried checking into the pathdef.m file, but apparently I don't have permission to access it either...

Answer 1

[Naga]

This error might occur because MATLAB is unable to properly establish a set of preferences or fails to generate a toolbox cache during its initial launch.

Solution #1:

Attempt to delete the MATLAB preferences for your user by executing the following command:

rm -rf ~/.matlab/R2014b

After that, try launching MATLAB again.

If the problem continues, proceed to Solution #2.

Solution #2:

For users experiencing this issue on a CentOS 6 client, mounting a MATLAB installation and preferences directory via NFS with Rdirplus enabled might lead to complications. Request your System Administrator to modify the /etc/nfsmount.conf file by changing the following line:

#Rdirplus=True

To false:

Rdirplus=False 

Launch MATLAB.