We've had reports of crashing and freezing after updating to R25.115 from some Mac users. We are aware of and currently working on resolving this issue. For now, we have pulled this update from Maxon App.
In the meantime, we've found that rolling back to R25.113 does stabilize things for users experiencing these issues. You can roll back using the Maxon App, or access the installer separately: Download Cinema 4D R25.113 for Mac
We apologize for any inconvenience this may have caused you.