[NotationUser]

As far as I remember the path to the templates has not changed after re-installation as administrator - but the folders access rights were completely different after that.

Before that I tried to manually set the access rights in the folder referring to the Vista article hints here - but that didn't work.

I have no problems running the installer as administrator - many installers request that right by themselves and I grant it to software I trust. Just Notation Software installers seem not to request this right by themselves - so I have to explicitly run it in that mode to succeed.

I understand that you wish to run your installers with the least priviledges needed, but Vista 64 is probably too restrictive to make that successful - is it? No clue, I just see that installing as administrator fixes the access rights issue.

So from my side the issue is under control - except you think it's a must running the installer with pure user rights... Which isn't quite the case either as my account I use has admin rights - otherwise I could not grant these on demand...