Ok, the first thing to do a backup your show...
You will need to hold down F1 on the keyboard while the desk boots.
This will bring up a Startup utility window.
In this window there is a Backup option, use that to save the show to memory stick, or burn it to a CD.
Please check that the show file is on the CD or memory stick before carrying on..
Next, in that same window, select the "Clear Show" option.
The desk should now reboot.
Please let me know if this does or doesn't sort this out...
Thanks...