Interesting. The ones that are left after trying out every other solution seem like they might all be connected to the graphical part. It might help if you guys compare your graphic cards and driver versions - at least in regards to System_Reflection, since there are already 5 people with the same error - and maybe there's something there, altough the hope is slim.
We also ideally need people in this thread who have solved their crash issues, so that we can compare their errors with the ones we have here.
Count
5 System_Reflection
3 physics_materials.xml (although one of them breaks off earlier than the other two)
1 flora_groups.xml.
1 System.xml.pbd
Solved:
3 Gauntlet UI/Widgets by switching to UK locale, courtesy of Radiorobot