Comment 5 for bug 498710

I didn't see X11 launch:
Inkscape was only in the Menu Bar and Dock for a very short time. In that space I didn't see X11 in the dock. It was not there afterwards which I assume it would be if it had launched.

From Terminal:
Last login: Sun Dec 20 07:04:57 on console
MBP:~ gaffa$ echo $DISPLAY

MBP:~ gaffa$
Which seem to confirm $DISPLAY not set.

I originally installed OS X 10.6 without X11. When I went to download X11 from the net it was 2.4.0 which Inkscape says doesn't work with 0.47 and Snow. Installed X11 2.3.4 from the 10.6 disk (navigated to the package on the disk and double clicked, as latest Pacifist gives me checksum errors when I try any install with it). Clean install indicated. Note, had upgraded to 10.6.1 in the meantime