I've just installed 10.0 on W2K3 and when the service starts I get the below errors. I've re-registered the .dll and gave the logon account for the service launch perms, but it still fails after numerous reboots, any ideas why I'm getting these errors?

The Backup Exec Server Service detected a schema version mismatch.
The Backup Exec Server Service did not start. An internal error (-536813108) occurred in object 1.