Difficulties when estimate a DSGE model

Dear all,

I am estimating a economic DSGE model with DYNARE, and I meet problems as follow:

??? Error using ==> chol
Matrix must be positive definite.

Error in ==> gmhmaxlik at 232
dd = transpose(chol(CovJump));

Error in ==> dynare_estimation_1 at 307
[xparam1,PostVar,Scale,PostMean] = …

Error in ==> dynare_estimation at 62

Error in ==> mp at 262

Error in ==> dynare at 132
evalin(‘base’,fname) ;

 Since I am a begginner of DYNARE, I don't know how to solve the problem. I need your help, thank you very much.<a class='attachment' href='/uploads/default/original/2X/c/c9f10ecafafcf8531d9ead016bdfb331ee345ad1.mod'>mp.mod</a> (2.29 KB)<a class='attachment' href='/uploads/default/original/2X/c/c56caa4b2047efa33ed97423540e312882b1a399.m'>data_Est_1sh.m</a> (3 KB)