Thanks for posting. Sounds like a typical Windows related error which occurs when copying folders sometimes.
Can you try the following:
1. Re-attempt the copy, when you receive the error, make a note of the folder name (write it down in notepad).
2. Cancel the error. For anything that was copied, delete it from the target location you were copying to before you received the error.
3. Go back to the source. Find the folder then rename it to something shorter.
4. Re-attempt the copy. Once everything has been copied to your target location, go to the folder you renamed then rename it to the original name.
See if that helps.