SEHException error when adding managed domain in backup exec 12.5

I have a mixed server 2003 and 2008 environment. I upgraded my backup server to 2008 and installed backup exec 12.5 to accommodate the change. When trying to add my active directory domain to the selection list I get the following error and backup exec crashes.

A severe application error has occurred.

Exception: System.Runtime.InteropServices.SEHException
External component has thrown an exception.

Stack Trace:     at BackupExec.UI.BEDlgs.ShowDialogWithAdamm(Int32 dialogId)
   at BackupExec.UIFramework.CommandManager.a(Object A_0, EventArgs A_1)
   at System.Windows.Forms.Application.ThreadContext.System.Windows.Forms.UnsafeNativeMethods.IMsoComponent.FDoIdle(Int32 grfidlef)
   at System.Windows.Forms.Application.ComponentManager.System.Windows.Forms.UnsafeNativeMethods.IMsoComponentManager.FPushMessageLoop(Int32 dwComponentID, Int32 reason, Int32 pvLoopData)
   at System.Windows.Forms.Application.ThreadContext.RunMessageLoopInner(Int32 reason, ApplicationContext context)
   at System.Windows.Forms.Application.ThreadContext.RunMessageLoop(Int32 reason, ApplicationContext context)
   at BackupExec.UI.MainForm.a(String[] A_0)
   at BackupExec.UI.MainForm.b(String[] A_0)

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Have you checked Not exactly the same, but worth looking at.

Why do you need to add the Active Directory domain to the selection list. I personally never had to do this. Does it not appear, even not when you install remote agents on some of the domain members and then add then publish the remote agent to the Backup Exec server?

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