Dear Michel,
How does the option smoother work with MLE? If you don't use the option, the output of oo_ is 
    mle_mode
    mle_std
    SmoothedVariables
    FilteredVariables
    SmoothedShocks
If you use the option, all you get is
    mle_mode
    mle_std
Is it possible to get some HPDinf and HPDsup with MLE?
Thanks,
Junior
			
		