We discovered v4.0.5 installer suffers from the following issues on Windows 7:
- Shows "published unknown" warning (just ignore it)
- Can't install assemblies into GAC if you aren't logged in as local Administrator. I.e. if you are logged in as user from "Domain Admins" group, it won't work anyway. So it's necessary to log in as use from local "Administrators" group to install it.