Not sure if there was a change, but this may help you:
[Where is crash report log file on mac os X ? - Cubase - Steinberg Forums]
You really need the dump files to know whats going on.
Other than that, if you think cubase should never crash, even when plugins crash, it would be nice if you could support this feature request by voting for it on the upper left 
Solution to crashes by plugins - Sandboxing (Crash protection) - Cubase - Steinberg Forums