Theoretical moments are NaNs

Hi, I have simulated model (attached) and received NaNs for theoretical moments of all variables but two. For simulation of empirical moments, it works. Is there any bad specification of the model? Should I worry about it?
Thank you for answer. Miroslav
housing_open6.mod (14 KB)

Your model has a unit root. In this case, the moments to not exist. This is the reason Dynare dispays them as NaN.