When I try to use the material override, corona crashes and Cinema4d also crashes
Can you share a scene in question or describe it in detail with steps to reproduce?
Simple/basic stuff works here.
eg
Thanks burnin, exactly my words 
Edot: Also, what version of Corona for C4D are you on?
Tested in two full scenes here, including the free Paris Apartment scene which is quite complex, and all worked as expected here with no crash.
always on the latest, since i only do testing and writing down notes, helps me better manage stuff & be consistent (if i make any mistake is also easier to solve)
Oh, sorry for the confusion, I meant the OP
Closing, because of lack of information. If this or similar bug is encountered again, please report in a new thread!