nm-connection-editor won't edit connections

[Rogier de Groot]

Binary package hint: network-manager-gnome

The nm-connection-editor program (run from the connection icon on the desktop or directly from command line) won't actually let me edit connections. It just greys out and becomes unresponsive when I delete the connection name (won't let me enter a new one) and when I try to select static IP (instead of DHCP).
Weird because it worked perfectly on my laptop.

ProblemType: Bug
Architecture: i386
CRDA: Error: [Errno 2] Bestand of map bestaat niet
Date: Sun Sep 20 13:38:33 2009
DistroRelease: Ubuntu 9.10
Gconf:

IfupdownConfig:
 auto lo
 iface lo inet loopback
IpRoute:
 192.168.1.0/24 dev eth0 proto kernel scope link src 192.168.1.74 metric 1
 169.254.0.0/16 dev eth0 scope link metric 1000
 default via 192.168.1.254 dev eth0 proto static
IwConfig:
 lo no wireless extensions.

 eth0 no wireless extensions.
NonfreeKernelModules: nvidia
Package: network-manager-gnome 0.8~a~git.20090913t161448.cc2f6be-0ubuntu1
ProcEnviron:
 LANG=nl_NL.UTF-8
 SHELL=/bin/bash
ProcVersionSignature: Ubuntu 2.6.31-10.34-generic
RfKill:

SourcePackage: network-manager-applet
Uname: Linux 2.6.31-10-generic i686