[Inkscape-user] Crash on Change Document Properties

I'm using Inkscape .48 on a Kubuntu 10.10 system with 8Gb of RAM and plenty of drive space.

Any attempt to modify Document Properties results in a crash.

I've tried it with both a new (blank) load of Inkscape as well as a couple of different pre-existing drawings.

It always says "Inkscape encountered an internal error and must close..."

Any ideas?