Hi Roland,

sorry to let you down on this, I'm still busy doing other stuff all the time.

The error you're getting seems to be related to your X-Server installation.

The KDE part of the agent starting is completely normal, it's just about setting your 

color depth AFAIK.

Sorry about messing arround with Master and Shadow stuff... What I ment was

this: When you're starting a GNOME session. You can just close the window when

you're leaving the desktop. Then just start the GNOME session again once you want

to come back. And you'll see the old one is still running and resumable. 

There is another way to connect to an opened session, via the desktopsharing feature

of x2go. But that seems unrelated...

It seems that you've messed up a part of your X or X configuration. This is acutally

what stops your x2go client from really doing something:

check command message 

X Error: BadWindow (invalid Window parameter) 3
  Major opcode: 20 (X_GetProperty)
  Resource id:  0x4004bbc
X Error: BadWindow (invalid Window parameter) 3
  Major opcode: 15 (X_QueryTree)
  Resource id:  0x4004bbc

Try to find the problem related to this. It seems that your problem is not about

x2go...