symbolic variables in MATLAB

Hi guys, I getting this error, any ideas?

Loading from: matlab.mat

??? Error using ==> error
Formatted arguments cannot be non-scalar numeric matrices.

Error in ==> sym.sym>assumptions at 2180

      error('symbolic:sym:sym:errmsg1','Second argument %s not recognized.',a);

Error in ==> sym.sym>tomupad at 2148

          assumptions(S,x,a);

Error in ==> sym.sym>sym.sym at 114

              S.s = tomupad(x,a);

Error in ==> Frame_Analysis at 297

X=sym('x',[1 m]); % Definition of design variables

[Azzi Abdelmalek]

post your code

[Itachi]

Hi again, about this problem. I've saved my workspace in matlab.mat . when I run my code I get correct answers but when my friend runs the same code on his computer he got this error!!!!

[Walter Roberson]

Your friend is running an earlier version of MATLAB than you are.

Answer 1

[Walter Roberson]

Which MATLAB release are you using? The ability to pass in array sizes is only a release or two old.