what is it? how to solve it?

syms x a1 a2 a3 a4 fi M0 EI l fi 

??? Error using ==> sym.sym at 198
Error using ==> maplemex
The license manager file, C:\Program Files\Maple 17\license\license.dat, does
not exist, or could not be opened

Error in ==> syms at 56
      assignin('caller',varargin{i},sym(varargin{i}));

Error in ==> MATRIX_FOR_V_COCHAV at 5
syms x a1 a2 a3 a4 fi M0 EI l fi

Answer 1

[Walter Roberson]

You installed MATLAB and then you installed Maple 17 and chose the option in Maple 17 to install the symbolic interface between MATLAB and Maple. However, when you then go to use the symbolic interface, the Maple 17 portion is unable to find its license file .

What would you like to have happen?

After you installed Maple 17 did you run it once to activate the license file?