Message: Cannot close file
Cause
 If 
 the file is on a floppy disk, the disk may have been removed from the 
 drive.
 If 
 the file is on a floppy disk, the disk may have been removed from the 
 drive. 
 If the file is on a hard 
 disk, the disk structure may be corrupt.
 If the file is on a hard 
 disk, the disk structure may be corrupt.
What Can I Do?
 If 
 the file is on a floppy disk, check the disk is correctly inserted in 
 the drive.
 If 
 the file is on a floppy disk, check the disk is correctly inserted in 
 the drive.
 If the file is on a hard 
 disk, run your disk diagnostic utilities to check for a corrupted disk 
 structure.
 If the file is on a hard 
 disk, run your disk diagnostic utilities to check for a corrupted disk 
 structure.