Error in MuPAD command: .

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Roy Sarkis 2023-11-29

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此问题的直接链接

https://ww2.mathworks.cn/matlabcentral/answers/2053837-error-in-mupad-command

评论： Venkat Siddarth Reddy 2023-12-14

I had Matlab 2021b and I used to use 'syms a b c' to create symbolic variables and it worked perfectly. Today I started getting the following error

Error using mupadmex

Error in MuPAD command: .

Error in sym>tomupad (line 1486)

S = mupadmex(numeric2cellstr(x));

Error in sym (line 249)

S.s = tomupad(x);

Error in syms (line 231)

defined = sym(zeros(1, length(args)));

I tried the following commands:

>> which -all syms

/Applications/MATLAB_R2023a.app/toolbox/symbolic/symbolic/syms.m

>> which -all sym

/Applications/MATLAB_R2023a.app/toolbox/symbolic/symbolic/@sym/sym.m % sym constructor

Additionally, I also tried

restoredefaultpath; rehash toolboxcache; savepath

If I run the following:

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

I get a status = 1

And I still get the same error. I have a macbook Pro M1 Max and using Matlab R2023a. Any ideas how to fix this?

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Roy Sarkis 2023-11-29

编辑：Roy Sarkis 2023-11-29

I do agree and i saw the requirements. I actually had R2021a and it was working before upgrading to MacOS Sonoma. Today (after some time from using matlab and after updating to Sonoma) I tried to run 'syms a b c' and it didnt work. I then upgraded to Matlab R2023b which should be supported on Sonoma https://ch.mathworks.com/support/requirements/matlab-mac.html but i still get the same error. Thats why i tried going back to previous versions but i still get the same error