Where is the mentalrayCustomNodeClass.mel in 2013. In the past it was pretty simple:
For Mac it was right click on the application icon, show package contents, and navigate to the Contents>scripts>others> and find the mentalrayCustomNodeClass.mel file, open it and modify the script and resave and reopen Maya. But now, the file doesn’t even exist in 2013. Can I simply copy the mentalrayCustomNodeClass.mel from 2012 and paste into 2013 script directory or will that interfere with newer scripts?