Operations Manager log flooded with 11903 errors due to "Virtual Hard Disk free disk space" monitor

Question

Management Pack: Microsoft Windows Hyper-V 2012 R2 Monitoring (7.1.10104.0)
Monitor: Virtual Hard Disk free disk space
There appears to be an issue with this monitor. Every hour, each of my Hyper-V servers is reporting dozens of errors similar to the following. It seems like there is a disconnect between the expected return type (integer) and the actual type (decimal) when
checking the free space on VHDX files.
Log Name:      Operations Manager
Source:        Health Service Modules
Date:          2/5/2014 7:59:47 AM
Event ID:      11903
Task Category: None
Level:         Error
Keywords:      Classic
User:          N/A
Computer:      BEAST.corp.technologytoolbox.com
Description:
The Microsoft Operations Manager Expression Filter Module could not convert the received value to the requested type.
Property Expression: Property[@Name='Microsoft:9AC8FCAB-800D-424F-ABCB-747063E5FCF1\559D22F4-A565-4AD4-9B71-44FC5D815C0C\0\0\L.FreeSpace']
Property Value: 488033.99609375
Conversion Type: DataItemElementTypeInteger(5)
Original Error: 0x80FF005A
One or more workflows were affected by this. 
Workflow name: Microsoft.Windows.HyperV.2012.R2.VirtualDrive.FreeSpaceMonitor
Instance name: Hard Disk
Instance ID: {0C0E0759-D846-963C-21E6-3C1A1C096D5F}
Management group: HQ
Event Xml:
<Event xmlns="http://schemas.microsoft.com/win/2004/08/events/event">
  <System>
    <Provider Name="Health Service Modules" />
    <EventID Qualifiers="49152">11903</EventID>
    <Level>2</Level>
    <Task>0</Task>
    <Keywords>0x80000000000000</Keywords>
    <TimeCreated SystemTime="2014-02-05T14:59:47.000000000Z" />
    <EventRecordID>32395</EventRecordID>
    <Channel>Operations Manager</Channel>
    <Computer>BEAST.corp.technologytoolbox.com</Computer>
    <Security />
  </System>
  <EventData>
    <Data>HQ</Data>
    <Data>Microsoft.Windows.HyperV.2012.R2.VirtualDrive.FreeSpaceMonitor</Data>
    <Data>Hard Disk</Data>
    <Data>{0C0E0759-D846-963C-21E6-3C1A1C096D5F}</Data>
    <Data>Property[@Name='Microsoft:9AC8FCAB-800D-424F-ABCB-747063E5FCF1\559D22F4-A565-4AD4-9B71-44FC5D815C0C\0\0\L.FreeSpace']</Data>
    <Data>488033.99609375</Data>
    <Data>DataItemElementTypeInteger(5)</Data>
    <Data>0x80FF005A</Data>
  </EventData>
</Event>

Answer 1

SCOM agent is running as SYSTEM. (I used to run SCOM agents as a low-privilege domain account but eventually surrendered to "The Dark Side" due to the number of issues encountered with that approach.)
PS HKU:\.DEFAULT\Control Panel\International> dir
Hive: HKEY_USERS\.DEFAULT\Control Panel\International
Name Property
Geo Nation : 244
User Profile Languages : {en-US}
ShowAutoCorrection : 1
ShowTextPrediction : 1
ShowCasing : 1
ShowShiftLock : 1
User Profile System Backup Languages : {en-US}
ShowAutoCorrection : 1
ShowTextPrediction : 1
ShowCasing : 1
ShowShiftLock : 1