Make sure the file specification you entered in the text box is formatted correctly. Any file name can contain a full or partial path name. A full path name starts with the drive name; a partial path name has one or more directory names before the file name, but does not include a drive name. For example, a:progsgraphiccircle.bas is a valid full path name graphiccircle.bas is a valid partial path name ..graphiccircle.bas is a valid partial path name This error can also occur when you try to save a file which replaces an existing read-only file.