There are already some posts about this around. It seems that in most cases older plugins are causing these problems. Remove all third party plugins from Cinemas Plugins folder, restart Cinema and check if this solves the crash issue. If it does, drag the plugins back to the Plugins folder - one by one - checking the stability.
Kind regards,
Arndt "Vreelonaut" von Koenigsmarck
http://www.vreel-3d.de
http://www.vonkoenigsmarck.de
CINEMA 4D V8 Studio Bundle