*** The VCB Framework version is not correct.
The VCB Framework SW, ESX Server version and the VC Server version all
need to be the correct versions. Check the release notes for the
version of ESX server you are running to make sure that all of the
components mentioned are the correct version for your ESX server.
*** You are using the VMware NetBackup Integration Module
If you have installed this, remove it if you are using NetBackup 6.5.1.
NetBackup 6.5 and above does not use the VMware NetBackup Integration
Module. If it is installed, it can prevent backups from working
properly. If it is installed and you uninstall it, make sure you also
remove any bp_start_notify and bp_end_notify scripts that have been
created as a result of this module.