failover cluster wmi provider detected an invalid character

We are getting this recurring error in our two node hyper-v cluster:

ID: 6237 Source: FailoverClustering-WMIProvider

Logs anywhere from 1- 15 of these errors every half hour. We are running on Server 2008 R2 SP1 with Hyper-V role and management done by VMM 2012. Hosts are identical hardware (Intel Board, dual quad-core Xeon, 48gb ram) and VMs running on EMC VNXe 3100 shared storage via iSCSI.

Log Name:      Microsoft-Windows-FailoverClustering-WMIProvider/Admin

Source:        Microsoft-Windows-FailoverClustering-WMIProvider

Date:          5/6/2013 5:02:11 AM

Event ID:      6237

Task Category: Failover Cluster WMI Provider

Level:         Error

Keywords:     

User:          COASCADA\msscvmm

Computer:      wwpsvrhypv02.coascada.local

Description:

Failover Cluster WMI Provider detected an invalid character. The private property name 'PreviousOfflineAction' had an invalid character but the provider failed to change it to a valid property name. Property names must start with A-Z or a-z, and valid characters for WMI property names are A-Z, a-z, 0-9, and '_'.

Event Xml:

<Event xmlns="http://schemas.microsoft.com/win/2004/08/events/event">

  <System>

    <Provider Name="Microsoft-Windows-FailoverClustering-WMIProvider" Guid="{0461BE3C-BC15-4BAD-9A9E-51F3FADFEC75}" />

    <EventID>6237</EventID>

    <Version>0</Version>

    <Level>2</Level>

    <Task>1</Task>

    <Opcode>0</Opcode>

    <Keywords>0x8000000000000000</Keywords>

    <TimeCreated SystemTime="2013-05-06T12:02:11.390560300Z" />

    <EventRecordID>8301</EventRecordID>

    <Correlation />

    <Execution ProcessID="6900" ThreadID="5376" />

    <Channel>Microsoft-Windows-FailoverClustering-WMIProvider/Admin</Channel>

    <Computer>wwpsvrhypv02.coascada.local</Computer>

    <Security UserID="S-1-5-21-3378633525-1537071075-772992230-3177" />

  </System>

  <EventData>

    <Data Name="Parameter1">PreviousOfflineAction</Data>

  </EventData>

</Event>