Thanks, I was able to get it to work with windows in a moment, but I can't make it work with ubuntu.
At first the real desktop popped a window, asking for permission, when given, vnc just disappeared, so at least it tries to connect. So I turned off the ''ask for permission'' option, and vnc simply dies when the connection is attempted.
My experience with linux is very limited, so I don't know whose fault it is, or even if it is supposed to work with gnome/ubuntu at all.
Anyway great work,

1. I only tested with RealVNC's vncserver (on both Windows and Linux). Until I address the issues, I suggest using this server. It may already be installed on your Linux system (as vncserver).
2. The port is based on a very old (from 2002) port of VNC for GNOME named gnome-vnc. It only advanced to the 0.1 stage. According to an announcement from the author, the port did not support hextile encoding, so this is also true of the port I did. The encoding type can generally be configured in the settings for the particular VNC server flavor.
3. I took a look at some of the source from TightVNC, which has been updated more recently, and it looks like it might be a good fit for the underlying VNC protocol code in my port, which should address various issues that have come up.