This is a conundrum. Some folks wants to fail rename only if copy protected, others want to continue since it's a rename only option and they want to clean up the library while keeping all files including copy protect files.
To work around both, I've move the ignore copy protection option to the per conversion task expert settings. Now you can check this flag if you want to continue operations on a copy protected file (no matter what) and it's configurable by task.
It'll be ther ein the next build