SBS 2008 Backup fails with error 2155348010

I know there are tons of posts about the size of the sector size. This is not the issue as we are using a 512 sector size, and the backup was running fine until a few weeks ago.  I have run diagnostics on the drive, run checkdsk, and everything checks out. I haven't seen anything recent on this issue. 

Log Name:      Application
Source:        Microsoft-Windows-Backup
Date:          8/2/2014 8:05:28 PM
Event ID:      519
Task Category: None
Level:         Error
Keywords:      
User:          SYSTEM
Computer:      SERVER.srb.local
Description:
Backup started at '8/3/2014 12:01:09 AM' failed to backup volume(s) 'D:' with following error code 2155348010 (One of the backup files could not be created.). Please rerun backup once issue is resolved.
Event Xml:
<Event xmlns="http://schemas.microsoft.com/win/2004/08/events/event">
  <System>
    <Provider Name="Microsoft-Windows-Backup" Guid="{1db28f2e-8f80-4027-8c5a-a11f7f10f62d}" />
    <EventID>519</EventID>
    <Version>0</Version>
    <Level>2</Level>
    <Task>0</Task>
    <Opcode>0</Opcode>
    <Keywords>0x8000000000000000</Keywords>
    <TimeCreated SystemTime="2014-08-03T00:05:28.973Z" />
    <EventRecordID>2698396</EventRecordID>
    <Correlation />
    <Execution ProcessID="6728" ThreadID="8016" />
    <Channel>Application</Channel>
    <Computer>SRB-SERVER.srb.local</Computer>
    <Security UserID="S-1-5-18" />
  </System>
  <EventData>
    <Data Name="BackupTime">2014-08-03T00:01:09.072Z</Data>
    <Data Name="FailedVolumeNames">D:</Data>
    <Data Name="ErrorCode">2155348010</Data>
    <Data Name="ErrorMessage">%%2155348010</Data>
  </EventData>
</Event>