Couldn't lock file; SHARE.EXE hasn't been loaded.
To enable file and record locking in a multiuser environment, you must first load SHARE.EXE.
To load SHARE.EXE
1 Exit Microsoft Windows.
2 Add the following line to your AUTOEXEC.BAT file:
If you don't have an AUTOEXEC.BAT file on your system, enter the preceding line at the command prompt before you start Windows. The number of locks you use depends on the particular applications you run and the number of files locked at any given time. If other applications require file locks, you may need to specify more than 500 locks.
3 Reboot your system, then try the operation again.