Hi,
we found a bug, thanks for the report. :)

We'll release an update in next days on the Unity Asset Store.
If you can't wait please contact us using the form at the URL
http://daedalus.artskillz.net/contact-us/

Hi,
are you using Unity Free or Unity Pro?

Hi,

please verify that the door prefab is not set to 'static' and the presence of scripts that might set it to static.
If the problem persists, please include editor screenshots to help us understand your problem.