Unable to load or create unit symbols.

 System error number 

Error number 

Disk Error - file may be locked.  Try a different file name.

Disk Error - disk is full. Try a different disk.

Disk Error - not a Mac diskette, wrong or bad directory format.  Try a different disk.

Disk Error - disk is write protected.  Eject the disk and reset the write protect tab.

Disk Error - disk I/O error. Try a different disk.

Disk Error - file directory full.  Try a different disk.

Disk error.  Try again or try a different disk, try a different filename, or use your backup copy.