VDP ends up dying at every site.....always have to rebuild.

Ive got the basic version of VDP running at three sites (Vsphere 5.5, VMware vCenter Server 5.5.0b, VCB 5.5). Without fail, after a moth or two, its quits running. Vsphere then gives four or more warnings like this:

• The ESX Host License does not permit usage of VDP and the 60 day evaluation period has ended.
• Start Core services using the vSphere Data Protection Configuration Utility.
• Start Backup Scheduler using the vSphere Data Protection Configuration Utility.
• From the Configuration tab of the vSphere Data Protection user interface, click the All Actions icon and select 'Run integrity check'.

If I open the vdp-configure window, I have to manually start: core services, maintenance services, backup scheduler. Once I restart those services, it runs for a while. Then I reboot and nothing restarts unless I manually restart (the errors above pop up). In frustration, each time, I've just removed the install of VCB and made a new one.

Help!

Thanks!

Arch