diff --git a/matlab/gsa/filt_mc_.m b/matlab/gsa/filt_mc_.m
index 472480135..60fb43976 100644
--- a/matlab/gsa/filt_mc_.m
+++ b/matlab/gsa/filt_mc_.m
@@ -150,14 +150,12 @@ if ~loadSA,
     if options_.opt_gsa.ppost || (options_.opt_gsa.ppost==0 && options_.opt_gsa.lik_only==0)
         skipline()
         disp('Computing RMSE''s...')
-        fobs = options_.first_obs;
-        nobs=options_.nobs;
         for i=1:size(vvarvecm,1),
             vj=deblank(vvarvecm(i,:));
             
             jxj(i) = strmatch(vj,lgy_(dr_.order_var,:),'exact');
             js(i) = strmatch(vj,lgy_,'exact');
-            yss(i,:,:)=repmat(sto_ys(:,js(i))',[nobs,1]);
+            yss(i,:,:)=repmat(sto_ys(:,js(i))',[gend,1]);
         end
             if exist('xparam1','var')
                 [alphahat,etahat,epsilonhat,ahat,SteadyState,trend_coeff,aK] = DsgeSmoother(xparam1,gend,Y,data_index,missing_value);
@@ -171,7 +169,7 @@ if ~loadSA,
             for j=1:length(filfilt),
                 load([DirectoryName filesep M_.fname '_filter_step_ahead',num2str(j),'.mat']);
                 nb = size(stock,4);
-                y0(:,:,nbb+1:nbb+nb)=y0(:,:,nbb+1:nbb+nb)+squeeze(stock(1,js,1:nobs,:));
+                y0(:,:,nbb+1:nbb+nb)=y0(:,:,nbb+1:nbb+nb)+squeeze(stock(1,js,1:gend,:));
                 nbb=nbb+nb;
                 clear stock;
             end
@@ -180,7 +178,7 @@ if ~loadSA,
             for j=1:length(filupdate),
                 load([DirectoryName filesep M_.fname '_update',num2str(j),'.mat']);
                 nb = size(stock,3);
-                yobs(:,:,nbb+1:nbb+nb)=yobs(:,:,nbb+1:nbb+nb)+squeeze(stock(js,1:nobs,:));
+                yobs(:,:,nbb+1:nbb+nb)=yobs(:,:,nbb+1:nbb+nb)+squeeze(stock(js,1:gend,:));
                 nbb=nbb+nb;
                 clear stock;
             end
@@ -208,7 +206,13 @@ if ~loadSA,
     disp('... done!')
     
     if options_.opt_gsa.ppost
-        save([OutDir,filesep,fnamtmp,'.mat'], 'x', 'logpo2', 'likelihood', 'rmse_MC', 'rmse_mode','rmse_pmean', 'r2_MC', 'r2_mode','r2_pmean')
+        save([OutDir,filesep,fnamtmp,'.mat'], 'x', 'logpo2', 'likelihood', 'rmse_MC', 'r2_MC')
+        if exist('xparam1_mean','var')
+            save([OutDir,filesep,fnamtmp, '.mat'], 'rmse_pmean', 'r2_pmean','-append')
+        end
+        if exist('xparam1','var')
+            save([OutDir,filesep,fnamtmp,'.mat'], 'rmse_mode', 'r2_mode','-append')
+        end
     else
         if options_.opt_gsa.lik_only
             save([OutDir,filesep,fnamtmp, '.mat'], 'x', 'logpo2','likelihood', '-append')
diff --git a/tests/Makefile.am b/tests/Makefile.am
index c99fd9341..1241bbaa4 100644
--- a/tests/Makefile.am
+++ b/tests/Makefile.am
@@ -9,6 +9,7 @@ MODFILES = \
 	gsa/ls2003.mod \
 	gsa/ls2003a.mod \
 	gsa/cod_ML_morris/cod_ML_morris.mod \
+	gsa/morris/nk_est.mod \
 	ramst.mod \
 	ramst_a.mod \
 	ramst_static_tag.mod \
@@ -405,6 +406,7 @@ EXTRA_DIST = \
 	expectations/expectation_ss_old_steadystate.m \
 	steady_state/walsh1_old_ss_steadystate.m \
 	data/test.xls \
+	gsa/morris/nk_est_data.m \
 	analytic_derivatives/fsdat_simul.m \
 	fs2000/fsdat_simul.m \
 	k_order_perturbation/run_fs2000kplusplus.m \
diff --git a/tests/gsa/morris/nk_est.mod b/tests/gsa/morris/nk_est.mod
new file mode 100644
index 000000000..307d3536e
--- /dev/null
+++ b/tests/gsa/morris/nk_est.mod
@@ -0,0 +1,61 @@
+//conducts posterior sampling with morris=1 and morris=2 and rmse
+var y l w pi r A dy pic;
+varexo eps_A eps_P;
+
+parameters PSI ETA BETA ALPHA KAPPA PI RHO;
+
+PSI = 1;
+ETA = 2;
+BETA = 0.95;
+KAPPA =  0.5;
+ALPHA =  0.99;
+PI = 1.005;
+RHO = 0.9;
+
+model;
+y = exp(A)*l; //production function
+w/y = PSI * l^ETA;//labor supply
+BETA*1/y(+1)*r/pi(+1)=1/y;//saving
+log(pi) =  ALPHA*log(pi(-1))+(1-ALPHA) * log(pi(+1)) + KAPPA*log(w/exp(A))+eps_P;//inflation
+log(r*BETA/PI) = 1.5*log(pi/PI);
+A = RHO*A(-1)+eps_A;
+//observable variables
+dy = log(y)-log(y(-1));
+pic= log(pi)-log(PI);
+end;
+
+
+steady_state_model;
+A = eps_A;
+w = exp(A);
+pi = PI;
+l = (1/PSI)^(1/(1+ETA));
+y = exp(A)*l;
+r = PI/BETA;
+end;
+
+shocks;
+var eps_A;
+stderr 0.01;
+var eps_P;
+stderr 0.01;
+
+end;
+
+
+
+steady;
+check;
+
+varobs dy pic;
+estimated_params; 
+ETA,3.7,0.00000001,10,GAMMA_PDF,5,1;
+KAPPA,0.3,0.00000001,0.99999999999,beta_PDF,0.5,0.1;
+stderr eps_A,0.02,0.000000000001,100,INV_GAMMA2_PDF,0.2,inf;
+stderr eps_P,0.03,0.000000000001,100,INV_GAMMA2_PDF,0.2,inf;
+end;
+estimation(order=1,prior_trunc=0,plot_priors =0, datafile=nk_est_data,conf_sig =.95,smoother,moments_varendo,filtered_vars,mode_check,mode_compute=4,mh_replic=5000,mh_jscale=1.5,mh_nblocks=1,bayesian_irf) y pi l dy pic;
+dynare_sensitivity (pprior=0,ppost=1,datafile=nk_est_data,rmse=1, nsam = 2000, lik_only = 0, morris = 2,var_rmse=(dy pic)) ;
+dynare_sensitivity (pprior=0,ppost=1,datafile=nk_est_data,rmse=1, nsam = 2000, lik_only = 0, morris = 1,var_rmse=(dy pic)) ;
+
+
diff --git a/tests/gsa/morris/nk_est_data.m b/tests/gsa/morris/nk_est_data.m
new file mode 100644
index 000000000..163632869
--- /dev/null
+++ b/tests/gsa/morris/nk_est_data.m
@@ -0,0 +1,2 @@
+dy=[-0.0164149606036333;-0.00444371301272480;-0.0207795284866737;0.0215820786048762;-0.0312134320780645;-0.00512948534530982;-0.00816441138903740;-0.00920043474284587;-0.00444588962592387;0.00990037151297068;-0.000302205963798416;0.0109144391005480;0.0206507032511272;-0.0255857842135019;0.0299198619790592;0.0142546980534387;0.00859492177250059;-0.0303314095678154;0.00899356446332817;-0.00604285895266747;0.0314719484936994;0.00774369700013479;-0.00392718531930176;0.0241656580707182;0.0194253385156230;0.0141073525966933;-0.0151806414891996;0.000550251173616845;0.0208456942892510;0.00560322075594884;0.00853240749768242;0.0164247183007063;-0.0368678800477706;-0.0185742571903465;-0.0173299635271128;0.000103201182005248;0.00328678857263721;0.0194237364814262;-0.0121878074879048;0.00324521362781441;0.0165910450130083;0.0118896697975725;-0.00616860319246618;-0.0291333058623287;0.00172296531042425;0.00171010632823477;-0.0154041449407641;-0.0148257487058540];
+pic=[-0.00435379489058567;-0.00435180828101745;-0.00817200970941144;-0.00842731261556473;-0.00951737126246006;-0.00886695915875320;-0.00604500733828971;-0.00540405598174093;0.00102138053045196;-0.00722842198263155;-0.00536250628245237;0.0143162753757018;0.00155729167142129;0.00794856841256976;0.00238632941368923;-0.00462579231860141;-0.00181553037594265;-0.00296814609653130;-0.00202489064931017;-0.00392682471012871;-0.00315893888873626;-0.00148200892054426;-0.00361797343071696;0.00393560470670129;0.00391822514942049;0.00709945122442479;0.0192754219330497;0.00950736196030246;0.0175065926305598;0.00444328018119639;-0.00497676719276699;-0.0163242287845185;-0.0131904917611750;-0.00513290322220038;-0.00282079685563725;0.00319215754813894;0.00238719485546936;0.00189456749063194;0.00208023344838363;0.0150119063295650;0.00613925617677741;0.00835197635546318;0.00687792801237943;-0.000973779982694851;-0.00165376676530256;-0.000219020842051647;-0.00244790436135745;0.000238009254825620];
\ No newline at end of file