"Backward Compatibility Script Error" alerts are generated with the description of "An error occurred on line 123 while executing script 'MOM Backward Compatibility Service State Monitoring Script'"

Problem:
When an Operations Manager 2007 SP1 agent is installed on a computer that is running Windows 7 or Windows Server 2008 R2, an alert may occur in the Operations console or an event may be logged on the computer that is being monitored. The alert reports that backward compatibility scripts failed.
The following are the details that are present in the alert and its corresponding event on the agent.

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Alert field	Value
Alert	Backward Compatibility Script Error
Alert description	An error occurred on line 123 while executing script 'MOM Backward Compatibility Service State Monitoring Script'
Source	Microsoft VBScript runtime error
Description	Type mismatch: 'get'

Log Name: Operations Manager
Source: Health Service Modules
Event ID: 9100
Level: Error
Description:
An error occurred on line 123 while executing script 'MOM Backward Compatibility Service State Monitoring Script' Source: Microsoft VBScript runtime error Description: Type mismatch: 'get'

Impact:
Low. This occurs because Windows 7 and Windows Server 2008 R2 have some services that have null values that the script does not expect. Therefore, the script fails with an error. The services for which these scripts fail are not critical. Therefore, you can safely ignore this alert.

Workaround:
Ignore the alert or upgrade to Operations Manager 2007 R2. This issue is resolved for Operations Manager 2007 SP1 by applying the update rollup that is documented in the KB article 971541.

More Info:
http://support.microsoft.com/kb/974722
http://support.microsoft.com/kb/971541