Are you using the latest version (4.0.2)? Which Cinema 4D version (e.g. R25)? Are you on Windows or Mac, are you rendering with CPU or GPU? Does it crash immediately when you start a render (PV or IPR)?
Thank you for the reply, but it now solved. it's the huion tablet driver that causing this problem( i know this from another site who asked about this problem). Once uninstalled it, it solved. But i can't use the graphic tablet anymore. I'm using Cinema 4D R25 and my arnold version is 4.0.1.
It does not crash when opening the IPR. it crashes when opening the material manager and node editor. I don't know how to switch the render between CPU and GPU. I have 3050 RTX.
Please try to update to version 4.0.2 to see if it helps.
You can switch between CPU and GPU from the System tab of the render settings: https://docs.arnoldrenderer.com/display/A5AFCUG/Device+Selection