MATLAB 2014a cannot enable parpool

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Ming on 12 Jun 2014
Commented: Sean de Wolski on 23 Jun 2014
Hi, I tried to enable parpool in MATLAB 2014a, it gives following message Error using parpool (line 99) The operation must modify one or more Settings files for these levels: factory, user, but you do not have write permission on these levels: user.
Error in parallel.internal.ui.PoolHelper.startPool (line 11) parpool();
I have all permissions, I tried to uninstall and install again, but after one or two days, this problem come out again
Ming on 16 Jun 2014
Edited: Ming on 16 Jun 2014
Thank you for your replying, here are the results
s = Settings;
ans =
Settings with no properties.
ans =

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Accepted Answer

Elwin Chan
Elwin Chan on 23 Jun 2014
I debugged Ming's MATLAB installation, and the problem was that there was a 3rd party MATLAB toolbox installed that contained a file called assert.m which was higher up on the MATLAB search path than the built-in MATLAB function. This was causing MATLAB's built-in assert function to be shadowed, and caused the error.
You can see which assert function will used by calling
which -all assert
You want built-in (L:\Bparallel\matlab\toolbox\matlab\lang\assert) to be the first one on the list. If it is not the first on on the list, then you should re-arrange your path using MATLAB's path tool.
Sean de Wolski
Sean de Wolski on 23 Jun 2014
I've seen uses' asserts break lots of things; it's probably the most shadowed function I've seen.

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