Most of these have a markcfg7 supplied file… this doesn’t exist on the supplied memory stick?
Where did this cor file come from?
The cor and the markcfg7 files are unique to each lens and aren’t interchangeable.
If this is a new machine, I’d contact the vendor.
In the device settings you can change the type of source to the type you have.
Was it in the device settings that you encountered the cor file error?