Dynare running error-- plz help me

I installed Dynare (version: 4.3.0) correctly and added the “matlab” subdirectory of my Dynare (matlab version: 2011(A)).

However, when I first ran Dynare, the MATLAB command window displayed the following error message:
??? Error using ==> dynare at 96
DYNARE: can’t open filename.mod**

I re-installed Dynare and re- set the path, but all my efforts did not work.

I want to know that what shoud I do?

Thanks a lot!

check if the matlab working directory is where the mod file is.