Backup error

HI we're recieving this error on one of our pc's and dont know a solution to fix it. The job fails toward the end of the backup. Help would be greatly appreciated.

Thanks

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Log Entry Details
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Type: Error
Date and time: 11/17/2012 12:28:27 AM
Backup plan: Desktop Backups
Task: Full backup
Managed entity type: [None]
Managed entity: [None]
Machine: admipcis34.NorCalFunds.Admin
Code: 16,318,468(0xF90004)
Module: 249
Owner:
Message: The service is being stopped at the moment.

Additional info:
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Error code: 10

Module: 249

LineInfo: 6298a2d9c3a1e7b4

Fields: $module : mms_vs_32256

Message: The service is being stopped at the moment.
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Acronis Knowledge Base: http://kb.acronis.com/errorcode/

Event code: 0x00F9000A

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