Hi Neil,
You need to enter the serial numbers for version 10.0 5484 in your 10.0 installation. The 8.x serial numbers wont be accepted.
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Additional Information :
For information on the recent VERITAS Backup Exec security vulnerabilities, including links to the downloads for the necessary hotfixes, please refer to the following document:
Patch summary for Security Advisories VX05-001, VX05-002, VX05-003, VX05-005, VX05-006, VX05-007
http://seer.support.veritas.com/docs/277429.htm
Regards,
Ashutosh
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