I was unable to get the VNC one click install running without some manipulation.
It is not much but the thing I done extra is:
Create /etc/gdm/custom.conf file and add the following:
#GDM configuration storage
[xdmcp]
Enable=true
[chooser]
[security]
DisallowTCP=false
[debug]
When this is done it works fine on port 5904 (even with the build-in osx vnc viewer
