Component_mex(A) not avialable

I am using Matlab BGL on my Mac using MATLAB R2014b.

When I try to call the function I receive the following error message:

"Undefined function 'components_mex' for input arguments of type 'double'.

Error in components (line 42)
[ci sizes] = components_mex(A);

Error in find_elem_circuits (line 69)
    [ci, sizec] = components(F);"

I assume something has gone wrong with compiling the codes, but I am not sure what, and cannot figure out how to fix this.

Thank you very much for your help!