Sun, Apr 29 2012 22:26
In the 2008 era of backups I've not seen that the reregistering of DLLs helps. What does help is merely listing the VSS writers and looking deep into the log flles and seeing what it's complaining about. Spotted this blog post that may also provide more info when you are trying to debug VSS backup issues.
How to: VSS Tracing - Ask the Core Team - Site Home - TechNet Blogs:
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