There is an update which may help with the vsbkp.exe process from crashing.
the update number is 19007 VSAWAVE5 patch.
you can get it from Maintenance Advantage > Software Updates > enter the update number 19007 in the search field.
download the version that you need (32 or 64 bit) and install it on you Virtual Server iDA.
Client Team Supervisor - Focus on Virtualization
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