VDS Errors on 2012 Hosts during Express Full Backups

Hello,

I have a Hyper-V 2012 Cluster using a CSV and am protecting select VMs within it using DPM 2012 Sp1.  I've applied the hotfix:http://support.microsoft.com/kb/2813630 which has resolved the major issues I was facing with backups crashing the cluster.

However, I've now noticed that every time an Express Full Backup is started I get the following error on the System log of my hosts:

Log Name:      System
Source:        VDS Basic Provider
Date:          4/11/2013 2:34:11 AM
Event ID:      1
Task Category: None
Level:         Error
Keywords:      Classic
User:          N/A
Computer:      MyHost.mycompany.com
Description:
Unexpected failure. Error code: 48F@01000003
Event Xml:
<Event xmlns="http://schemas.microsoft.com/win/2004/08/events/event">
  <System>
    <Provider Name="VDS Basic Provider" />
    <EventID Qualifiers="49664">1</EventID>
    <Level>2</Level>
    <Task>0</Task>
    <Keywords>0x80000000000000</Keywords>
    <TimeCreated SystemTime="2013-04-11T08:34:11.000000000Z" />
    <EventRecordID>82775</EventRecordID>
    <Channel>System</Channel>
    <Computer>MyHost.MyCompany.Com</Computer>
    <Security />
  </System>
  <EventData>
    <Data>48F@01000003</Data>
  </EventData>
</Event>

I don't seem to be having any issues with the machines pausing or crashing, but the errors are concerning to me.  When I check the state of the VSS Writers, they are all in a "Stable" state with no last error.

Any help would be appreciated.

Thanks!

--Shaun