Hello,
This is a nightmare and Solarwinds wont' help as it's a SQL issue - great!
I have Orion 9.1 SP5 installed on a server, but the database is on another server which is SQL 2000.
We need to move the database to our SQL 2005 server first before upgrading to 9.5 (only run in SQL 2005 I believe). I backed up the NetPerfMon database on our SQL 2000 server then restored it to our SQL 2005 server fine.
After that I ran the Configuration Wizard and get this error:

I am using the 'sa' username and password.
Any ideas?