Error creating symbolic variable

I am getting the following error when I am trying to create a symbolic variable

Error using mupadmex
Error in MuPAD command:

Error in symengine

Error in sym (line 157)
        [~] = symengine;

Error in syms (line 77)
toDefine = sym(zeros(1, 0));

I checked the status of the license of the symbolic toolbox and got the following result

>> status = license('test','symbolic_toolbox')

status =

       1

I also reinstalled symbolic toolbox. But the problem remains.

Please help in solving the problem. I am using Matlab R2015b on Mac OS Version 10.10.5

Thanks,

Vishal

[Walter Roberson]

Is that the entire text of the error? It says there is an error using mupadmex but it does not say what the error is?

[Vishal Das]

Yes it is the entire text of the error.

[Vishal Das]

I don't know the exact cause of the problem, but it got resolved once I restarted my computer after reinstalling Symbolic Math Toolbox.

Thanks, Vishal