Hi,
As a first step ensure that Service Pack 6a is installed for Windows NT.
Please refer to the following Software Compatibility list for Backup Exec 9.0
VERITAS Backup Exec (tm) 9.0 for Windows Servers - Software Compatibility List
http://support.veritas.com/docs/251810
As far as the Catalog issue is concerned.
Click on "Tools" > "Options" > "catalog" > "Use storage meida based catalogs".
Uncheck this option and try cataloging the tape again....
Before that you may also recreate the "Catalogs" folder
Stop all BE services
Rename the "Catalogs" folder in Programs\Veritas\Backup Exec\NT directory to "Catalogsold".
Restart the services.
Check whether a new Catalog folder is created.
Hope this helps.
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