Symbolic Toolbox Problem mupadmex

My Matlab 2018b, symbolic toolbox does not work. It breaks at syms command. OS X is Catalina.

Symbolic Math Toolbox Version 8.2 (R2018b)

>> syms 't'

Error using mupadmex

Error in MuPAD command: .

Error in sym>tomupad (line 1230)

S = mupadmex(numeric2cellstr(x));

Error in sym (line 214)

S.s = tomupad(x);

Error in syms (line 205)

toDefine = sym(zeros(1, 0));

Answer 1

[Walter Roberson]

Upgrade to R2019b Update 4. It solves several Catalina related problems.

I would not expect that they would create an update for this for R2018b, but possibly for r2019a maybe.

[Kostas Daniilidis]

Thank you Walter. Indeed Symbolic Toolbox works now under MATLAB Version: 9.7.0.1296695 (R2019b) Update 4.