Getting "operation has failed" when running a backup.

I'm getting this error on only one host. (all of the servers on the host) I was able to back them up after I shut them down. I have ESXi 4.0.0, 208167 on this host. The others have 4.1... On vCenter it shows that the snapshot timed out. My other servers work fine... When i create a snapshot from within Vcenter it works fine. Errors are as follows:

********************
The operation has failed.
Additional info:
--------------------
Error code: 26
Module: 100
LineInfo: 903ba9594d70818b
Fields:
Message: The operation has failed.
--------------------
Error code: 1080
Module: 1
LineInfo: d1ab7fa1e56ec747
Fields:
Message:
--------------------
Error code: 13
Module: 149
LineInfo: d1ab7fa1e56ec8b7
Fields:
Message: Failed to perform the requested operation.
--------------------
Error code: 103
Module: 83
LineInfo: a859dd78cc91de7b
Fields:
Message: Failed to open the virtual machine ([datastore1] server.domain.local/server.domain.local.vmx).
--------------------
Error code: 64
Module: 83
LineInfo: c7610e0a857bedda
Fields:
Message: VMware error: 'An internal error.'.
--------------------
Error code: 196
Module: 0
LineInfo: c7610e0a857bedda
Fields:
Message: Awaiting task 'CreateSnapshot' has failed. Reason: fault.Timedout.summary.
*******************************************
Failed to perform the requested operation.
Additional info:
--------------------
Error code: 13
Module: 149
LineInfo: d1ab7fa1e56ec8b7
Fields:
Message: Failed to perform the requested operation.
--------------------
Error code: 103
Module: 83
LineInfo: a859dd78cc91de7b
Fields:
Message: Failed to open the virtual machine ([datastore1] server.domain.local/server.domain.local.vmx).
--------------------
Error code: 64
Module: 83
LineInfo: c7610e0a857bedda
Fields:
Message: VMware error: 'An internal error.'.
--------------------
Error code: 196
Module: 0
LineInfo: c7610e0a857bedda
Fields:
Message: Awaiting task 'CreateSnapshot' has failed. Reason: fault.Timedout.summary.
*********************************
Task 'DC Backup' failed: 'Failed to create a backup.
Additional info:
--------------------
Error code: 3
Module: 435
LineInfo: 555b5abba09500ab
Fields:
Message: Failed to create a backup.
--------------------
Error code: 32786
Module: 114
LineInfo: 28314c961de7d3b2
Fields:
Message: Failed to prepare for backing up.
--------------------
Error code: 353
Module: 149
LineInfo: a71592046cb2c5f8
Fields:
Message: Failed to back up the group.
--------------------
Error code: 2
Module: 218
LineInfo: 338a407ad20e0987
Fields:
Message: Error occurred while running the backup and recovery engine.
--------------------
Error code: 1080
Module: 1
LineInfo: d1ab7fa1e56ec747
Fields:
Message:
--------------------
Error code: 13
Module: 149
LineInfo: d1ab7fa1e56ec8b7
Fields:
Message: Failed to perform the requested operation.
--------------------
Error code: 103
Module: 83
LineInfo: a859dd78cc91de7b
Fields:
Message: Failed to open the virtual machine ([datastore1] server.domain.local/server.domain.local.vmx).
--------------------
Error code: 64
Module: 83
LineInfo: c7610e0a857bedda
Fields:
Message: VMware error: 'An internal error.'.
--------------------
Error code: 196
Module: 0
LineInfo: c7610e0a857bedda
Fields:
Message: Awaiting task 'CreateSnapshot' has failed. Reason: fault.Timedout.summary.