Path/File access error
During an Open
Make sure the file specification is formatted correctly. A file name can contain a fully qualified or relative path. A fully qualified path starts with the drive name (if the path is on another drive) and lists the explicit path from the root to the file. Any path that is not fully qualified is relative to the current drive and directory.
This error can also occur while attempting to save a file that would replace an existing read-only file.