Steady State Calculations

when I try to compute the steady state using dynare, it gives me this error message.

??? Error using ==> /
Matrix dimensions must agree.

Error in ==> C:\MATLAB6p5\work\Dynare\dynare_v3\matlab\lnsrch1.m
On line 29 ==> alamin = tolx/test ;

I know a stable steady state exists for my model because I calculated it separately in MATLAB.

Any thoughts would be greatly appreciated.