VM Backup–Failed to created a quiesced snapshot again!

I am again hit with the problem of backing up two virtual machines with the same error in my previous post Problem With Virtual Machine Backup–Part 2 of 2 but with a different cause.

The same error message shown up in vCenter.

Create virtual machine snapshot

Cannot create a quiesced snapshot because
the create snapshot operation exceeded the
time limit for holding off I/O in the frozen
virtual machine.

Checking the hostd.log, I found the following error message.

[2011-12-23 03:20:23.108 FF99EE80 verbose 'vm:/vmfs/volumes/4a880abd-883fb168-b09f-12feb0cabb11/deServer01/deServer01.vmx' opID=b30b905e-c] Tools version status: ok
[2011-12-23 03:20:23.108 FF99EE80 verbose 'vm:/vmfs/volumes/4a880abd-883fb168-b09f-12feb0cabb11/deServer01/deServer01.vmx' opID=b30b905e-c] VMware Tools are current in guest: true
[2011-12-23 03:20:25.114 FF99EE80 verbose 'vm:/vmfs/volumes/4a880abd-883fb168-b09f-12feb0cabb11/deServer01/deServer01.vmx' opID=b30b905e-c] Quiesced snapshot backup agent event: (vim.vm.BackupEventInfo) {
   dynamicType = <unset>,
   eventType = "requestorError",
   code = 3,
   message = "The system cannot find the path specified.",
}
[2011-12-23 03:20:25.114 FF99EE80 error 'vm:/vmfs/volumes/4a880abd-883fb168-b09f-12feb0cabb11/deServer01/deServer01.vmx' opID=b30b905e-c] Quiesced snapshot backup agent error: The system cannot find the path specified. (3)
[2011-12-23 03:20:25.115 FF99EE80 verbose 'vm:/vmfs/volumes/4a880abd-883fb168-b09f-12feb0cabb11/deServer01/deServer01.vmx' opID=b30b905e-c] Tools version status: ok
[2011-12-23 03:20:25.115 FF99EE80 verbose 'vm:/vmfs/volumes/4a880abd-883fb168-b09f-12feb0cabb11/deServer01/deServer01.vmx' opID=b30b905e-c] VMware Tools are current in guest: true
[2011-12-23 03:20:25.115 FF99EE80 verbose 'vm:/vmfs/volumes/4a880abd-883fb168-b09f-12feb0cabb11/deServer01/deServer01.vmx' opID=b30b905e-c] Quiesced snapshot backup agent event: (vim.vm.BackupEventInfo) {
   dynamicType = <unset>,
   eventType = "requestorError",
   code = 3,
   message = "Error when enabling the sync provider.",
}

The resolution for this cause was simple.  I did a repair on the VMware Tool installation and it solved the issue.  Just completed the backup for the two virtual machines.