Error in MuPAD command: .

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?

[Walter Roberson]

Did you recently do an operating system update ?

[Roy Sarkis]

Yes, since the last time I used this, I have done 2 or 3 software updates.

[Walter Roberson]

R2023a is not supported on MacOS Sonoma

https://www.mathworks.com/content/dam/mathworks/mathworks-dot-com/support/sysreq/files/system-requirements-release-2023a-macintosh.pdf

[Roy Sarkis]

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

[Venkat Siddarth Reddy]

Hi @Roy Sarkis,

Did you execute the above commands, after upgrading your MATLAB to R2023b?

These errors might be due to search path issues or/and file shadowing issues that occured after you updating your MATLAB release.