sbsbackup fails with "Script.bks" cannot be found.

One of my SBS boxes had its SBSbackup jobs fail nightly with the following info:

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Backup Runner started.
Launching NTBackup: ntbackup.exe backup "@D:\Program Files\Microsoft Windows Small Business Server\Backup\Small Business Backup Script.bks" /d "SBS Backup created on 10/30/2008 at 11:00 PM" /v:yes /r:no /rs:no /hc:off /m normal /j "Small Business Server Backup Job" /l:s /f "H:\backup4\Backup Files\Small Business Server Backup (04).bkf" /UM
NTBACKUP LOG FILE: C:\Documents and Settings\SBS Backup User\Local Settings\Application Data\Microsoft\Windows NT\NTBackup\data\backup05.log
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The saved selection file "Script.bks" cannot be found.
The saved selection file "Script.bks" cannot be found.
============================================
NTBackup finished the backup with errors.

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Apparently, the problem is that selections are invalid - which is strange because I didn't change anything. The solution turned out to be:

1. Start -> Run -> NTBackup -> Advanced Mode -> Backup tab -> Job -> Load
Selections.

2. Select Small Business Backup Script.bks

3. Click OK on the error message:

Some invalid selections found in C:\Program Files\Microsoft Windows Small
Business Server\Backup\Small Business Backup Script.bks.

4. Job -> Save Selections (overwrite --> Small Business Backup Script.bks)



It seems like this is related to a recovery storage group causing backup trouble.