Straight after installation of the RC, i get an unhandled exeption on startup (after showing the splash screen (compiling etc. took quite a bit)), click on Continue quits the application.
I just tested it on another machine with the same custom theme without getting an exception, will give it a try back in studio (this may be end of the week though),
Yep. There were some nugets installed from older previews. Will clean it if the theme/settings solution did not help and report about the behaviour.