I've been having quite a few crashes when updating Master Styles.
I'm trying to point down the exact actions which lead to the crash. Generally I've been adding extra parameters, adjusting their default values and adding a couple of extra function nodes, such as UVW Xform. Nothing that complicated.
The crash occurs when selecting an object which uses it's master style. I think it might be because I'm selecting using Layer explorer opposed to in the viewport. But not sure. I will update if I clarify the issue further.