I guess you mean the version with launcher. If so, there is nothing new except the launcher. No installation process changed.
I think the problem is about permission (probably reading WOL). My theory is that the installer grants you a permission but for some reason it gets removed after first use. Then you have to reinstall nox to obtain the permission again.
I will try to change the process which is responsible for granting permissions. Meanwhile you can try to
- Set up permission "full controll" to WOL folder.
- Use different installation path.