I had big issues with using the C4D noise shaders resulting in instant crashes but it only occurred on one machine, and did it in both R16 and R17. it was fine on another couple of machines that I tested. After some head scratching I reinstalled C4D to a new folder then copied it into my original MAXON installation folder and deleted the original installation. Now everything works. Might be worth a try. You can give it a dry run by just installing c4d to a new folder and the copy across the corona plugin folder and .dll files from your original installation.