Display reason for mode_check-problems when debugging is enabled

matlab/mode_check.m

@@ -145,6 +145,9 @@ for plt = 1:nbplt,
                 y(i,1) = fval;
             else
                 y(i,1) = NaN;
+                if DynareOptions.debug
+                    fprintf('mode_check:: could not solve model for parameter %s at value %4.3f, error code: %u\n',name,z(i),info(1))
+                end
             end
             if DynareOptions.mode_check.nolik==0
                 lnprior = priordens(xx,BayesInfo.pshape,BayesInfo.p6,BayesInfo.p7,BayesInfo.p3,BayesInfo.p4);