Hi ..
It's a limitation of the file system, it's not an error.
It does not work as well as Windows Explorer!
I found this limitation when copying Tyros 5 folders, too.
Copy the top level, then look inside that/those folders and copy again down a folder level and try again/overwrite as necessary. I found happens if there are too many folders of files inside other folders. Only thing is, dont lose where you get to (compare afterwards)
The only other issue I had was finding a few reg's that had strange symbols in name, Genos file system does not seem tolerant of these.
Al.