I am installing Veeam Backup and FastFCP 4.1.2.125 to a Windows 2003 server that also has BackupExec 10d installed on it. I tried using the existing BackupExec SQL instance for my isntallation and received the following error:
This is a fresh install, not an upgrade, with the intent of backing up virtual servers running on a VMWare ESX 3i 3.5.0 U4
I would suggest creating a new SQL instance and try to deploy Veeam configuration database using this instance. If it doesn't help, please don't hesitate to open a support ticket with our technical support team for further troubleshooting.