Comment 2 for bug 442642

'Render > Grid' (internal extension, not python-based) still has the bug when applied to a selected rectangle (bug #401567), but I don't know if this is related.

@BigOldNerd - there is only one prerelease build for Tiger available: 'Inkscape-0.47-pre1-1.TIGER-Intel.dmg' from <http://sourceforge.net/projects/inkscape/files/inkscape/0.47pre1/>

If the crash still happens with 0.47pre1 Tiger, could you attach the crash log and any related log messages you see in when you open 'Console.app' (in 'Applications > Utilities') and select the 'All messages' entry in the log list?