Comment 2 for bug 221345

Committed rev 447. It'll probably show up in the PPA and reacocard's repo sometime soon.

If this doesn't fix it then I'll have a more detailed look at the code again... I had previously went in and, I believe, hunted down all the signed int s used and replaced with guint64. However I did make a couple structure members guint. I've switched them to guint64. I'm not sure that is the cause though as I wouldn't expect that to cause the behavior you're seeing... instead I would expect an issue at >4096. Anyway, please test.