I'm running Debian unstable with a kernel I compiled myself (the NVidia installer dislikes Xen kernels, and all of the stock kernels have paravirtualization enabled :P). update.rlb crashes with no errors (window pops open for a moment, then closes) when I run it from a terminal, but starting VO directly works just fine. Haven't had time to try a re-install yet, but I thought I'd ask here if there was a way to get some output when running the updater.

From reading long-past posts here, I'm beginning to think this probably has something to do with my gtk libraries. Unfortunately, I'm not able to get to my system right now.

Had something to do with update.rlb. Deleted it (as suggested by IRS in this thread) and all is well.