I’ve just noticed that if you open a Synfig file by clicking on it in Nautilus, then open another one before Synfig has opened and loaded the first file you get a crash.
As Zelgadis is looking at Synfig Studio problems that happen when closing files I wondered whether this opening files issue is a related issue.
If someone else can confirm this happens for them then I’ll file a bug, if not it’s probably something wrong with my computer.
Synfig Studio 0.63.05, 64-bit RPM downloading from synfig.org
Fedora 17, Nouveau Graphics, Gnome 3.4