Are you getting annoyed because you are frequently facing error 50 on Macintosh. You generally get this error when you are trying to to copy a file to another internal or external drive. The possible reasons for this error can be that you may be copying a file which is too large, you do not have permission of doing that, the file attributes are not allowing this process etc. One other reason for error 50 on Macintosh is that the file name consists of invalid characters. You can fix it by changing the file name, shredding the large file into smaller files, If you are copying to external drive then check that the connection is okay and drive is working perfectly. If you get the error 50 on Macintosh while the transferring is going on then the file may get corrupt and become inaccessible. You can recover that file if you have backed it up elsewhere, if the backup is not there then you can use the Mac data recovery software after you have fixed error 50 on Macintosh. The software will repair and recover all the data which have been lost efficiently.