VPN connection no longer available for me as user

[Joerg Desch <news@jdesch.de>]

I run into a bug where nm-connection-editor doesn't read the password out 
of the settings. And without password it doesn't save changes.

I hadn't recognized this first, so that I tested editing the setup as 
root. The console outputs leads me to a solution. After saving my changes 
as root, I no longer have access to the VPN. Even the entry isn't visible.

Within the configuration file, I have found the following line.

   permissions=user:root:;

I've changed it back to my login name, but it still doesn't work.

How can I change the permissions back to me as owner?