I confirm: the old check created some time ago (see this article) doesn’t work for Exchange 2013 installations. It seems to be be caused by significant changes on Powershell calls or cmdlets. I am having some troubles to get rid of the issue because I stepped away of Exchange business some time ago. A friend of mine is helping me to make the script working and I’ll hopefully publish a new version for Exchange 2013 very soon.

Stay tuned.