wsus error (possible database issue?)

I started having issues with the WSUS console (2012 R2).  It would throw an error but if I click reset server node, then it is ok.  I narrowed it down to a computer group.  When I clicked on the group, it would error out.  I cleared the MMC cache and when I click on the group, it is ok.  However, the default view is 'failed or needed'.  When I change the view in this group to 'any' then it fails again.  It only happens with this one group. I get the same error when trying to view from powershell.  Database is SQL 2012 express.  I have a couple workarounds I could try but wanted to get some opinions first from some SQL experts as to how to troubleshoot since this is a weak area for me.

Log Name:      Application
Source:        Windows Server Update Services
Date:          7/21/2016 8:52:23 AM
Event ID:      7053
Task Category: None
Level:         Error
Keywords:      Classic
User:          N/A
Computer:      <server>
Description:
The WSUS administration console has encountered an unexpected error. This may be a transient error; try restarting the administration console. If this error persists, 

Try removing the persisted preferences for the console by deleting the wsus file under %appdata%\Microsoft\MMC\.


The WSUS administration console has encountered an unexpected error. This may be a transient error; try restarting the administration console. If this error persists, 

Try removing the persisted preferences for the console by deleting the wsus file under %appdata%\Microsoft\MMC\.


System.Xml.XmlException -- '', hexadecimal value 0x16, is an invalid character. Line 1, position 36072.

Source
System.Xml

Stack Trace:
   at System.Xml.XmlTextReaderImpl.Throw(Exception e)
   at System.Xml.XmlTextReaderImpl.ParseNumericCharRefInline(Int32 startPos, Boolean expand, StringBuilder internalSubsetBuilder, Int32& charCount, EntityType& entityType)
   at System.Xml.XmlTextReaderImpl.ParseCharRefInline(Int32 startPos, Int32& charCount, EntityType& entityType)
   at System.Xml.XmlTextReaderImpl.ParseText(Int32& startPos, Int32& endPos, Int32& outOrChars)
   at System.Xml.XmlTextReaderImpl.ParseText()
   at System.Xml.XmlTextReaderImpl.ParseElementContent()
   at System.Xml.XmlReader.ReadStartElement()
   at System.Xml.Serialization.XmlSerializationReader.ReadStringValue()
   at System.Xml.Serialization.XmlSerializationReader.ReadTypedPrimitive(XmlQualifiedName type, Boolean elementCanBeType)
   at Microsoft.Xml.Serialization.GeneratedAssembly.XmlSerializationReaderApiRemotingCompressionProxy.Read1_Object(Boolean isNullable, Boolean checkType)
   at Microsoft.Xml.Serialization.GeneratedAssembly.XmlSerializationReaderApiRemotingCompressionProxy.Read2_GenericReadableRow(Boolean isNullable, Boolean checkType)
   at Microsoft.Xml.Serialization.GeneratedAssembly.XmlSerializationReaderApiRemotingCompressionProxy.Read339_Item()
   at System.Xml.Serialization.XmlSerializer.Deserialize(XmlReader xmlReader, String encodingStyle, XmlDeserializationEvents events)
** this exception was nested inside of the following exception **


System.InvalidOperationException -- There is an error in XML document (1, 36072).

Source
System.Xml

Stack Trace:
   at System.Xml.Serialization.XmlSerializer.Deserialize(XmlReader xmlReader, String encodingStyle, XmlDeserializationEvents events)
   at System.Web.Services.Protocols.SoapHttpClientProtocol.ReadResponse(SoapClientMessage message, WebResponse response, Stream responseStream, Boolean asyncCall)
   at System.Web.Services.Protocols.SoapHttpClientProtocol.Invoke(String methodName, Object[] parameters)
   at Microsoft.UpdateServices.Internal.ApiRemoting.ExecuteSPSearchComputers(String computerTargetScopeXml)
   at Microsoft.UpdateServices.Internal.DatabaseAccess.AdminDataAccessProxy.ExecuteSPSearchComputers(String computerTargetScopeXml)
   at Microsoft.UpdateServices.Internal.BaseApi.ComputerTarget.SearchComputerTargets(ComputerTargetScope searchScope, UpdateServer updateServer)
   at Microsoft.UpdateServices.UI.AdminApiAccess.ComputerTargetManager.GetComputerTargets(ComputerTargetScope searchScope)
   at Microsoft.UpdateServices.UI.AdminApiAccess.BulkComputerPropertiesCache.GetAndCacheComputers(ExtendedUpdateScope updateScope, ComputerTargetScope computerTargetScope)
   at Microsoft.UpdateServices.UI.SnapIn.Pages.ComputersListPage.GetListRows()

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PS C:\> Get-WsusComputer
Get-WsusComputer : There is an error in XML document (1, 104891).
At line:1 char:1
+ Get-WsusComputer
+ ~~~~~~~~~~~~~~~~
    + CategoryInfo          : InvalidData: (Microsoft.Updat...ComputerCommand:GetWsusComputerCommand) [Get-WsusComputer], InvalidOpe 
   rationException
    + FullyQualifiedErrorId : UnexpectedError,Microsoft.UpdateServices.Commands.GetWsusComputerCommand
 

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