Access denied (5)

When I try to copy or move a file I sometimes get this message - an error orrured while copying - access is denied (5). What is the cause and how can I overcome it

thank you

It usually means some program has a lock on the file because it is reading and/or writing the file at the same time Opus is trying to read, move or delete it.

On NTFS disks it can also mean that the file permissions deny access to the file.