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error -641 (chunk checksum didn't match)

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All of a sudden I am getting an error which says "Trouble matching Local Disk (C:) to Backup Set B, error -641 (chunk checksum didn't match)".


I am running:

Retrospect Multi Server Version 7.6.111

Driver Update and Hot Fix, version

on a Windows 2000 SP4 Server.


I have tried restarting the server and performed a recatalog. The problem still persists.


I tried searching these forums and the knowledgebase but was unable to find any information about this error.


I am currently unable to perform any backup. Does anyone know how to resolve this error?


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Yes, I am able to backup to a different backup set.


First I tried "Tools", "Repair Catalog", "Repair File Backup Set" but received an error saying "Can't use a valid non-file backup set to recreate." so instead I ran "Tools", "Repair Catalog", "Update Existing Catalog File" which completed without error.

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