VM with "Unknown" status

After an sudden power outage we were able to recover our vcloud director cell, but all VMs show the "unknown" status and all operations are disabled from the GUI. I'm able to poweron vms with the PowerCLI Start-CIVapp without problem.

Get-CIVM output sample:

Name                           Status                      GuestOSFullName                          CpuCount MemoryGB

----                           ------                      ---------------                          -------- --------

WINVM0                         Unknown                     Microsoft Windows Server 2008 R2 (64-... 0        0.000

WINVM1                         Unknown                     Microsoft Windows Server 2008 R2 (64-... 0        0.000

WINVM2                         Unknown                     Microsoft Windows Server 2008 R2 (64-... 0        0.000

I trying refreshing and reconnecting to the vcloud's vcenter with no change.

Any ideas?