Error on opportunity when upgrated from CRM 2011 to 2013

Hi,

 I have upgrated from crm 2011 to 2013, now, there is error on opportunity save.

I downloaded log file, it shows

Unhandled Exception: System.ServiceModel.FaultException`1[[Microsoft.Xrm.Sdk.OrganizationServiceFault, Microsoft.Xrm.Sdk, Version=6.0.0.0, Culture=neutral, PublicKeyToken=31bf3856ad364e35]]: An error occurred. Contact a system administrator or refer to the Microsoft Dynamics CRM SDK troubleshooting guide.Detail: 
<OrganizationServiceFault xmlns:i="http://www.w3.org/2001/XMLSchema-instance" xmlns="http://schemas.microsoft.com/xrm/2011/Contracts">
  <ErrorCode>-2147220891</ErrorCode>
  <ErrorDetails xmlns:d2p1="http://schemas.datacontract.org/2004/07/System.Collections.Generic">
    <KeyValuePairOfstringanyType>
      <d2p1:key>OperationStatus</d2p1:key>
      <d2p1:value xmlns:d4p1="http://www.w3.org/2001/XMLSchema" i:type="d4p1:string">0</d2p1:value>
    </KeyValuePairOfstringanyType>
    <KeyValuePairOfstringanyType>
      <d2p1:key>SubErrorCode</d2p1:key>
      <d2p1:value xmlns:d4p1="http://www.w3.org/2001/XMLSchema" i:type="d4p1:string">-2146233088</d2p1:value>
    </KeyValuePairOfstringanyType>
  </ErrorDetails>
  <Message>An error occurred. Contact a system administrator or refer to the Microsoft Dynamics CRM SDK troubleshooting guide.</Message>
  <Timestamp>2013-10-22T12:29:44.1559035Z</Timestamp>
  <InnerFault i:nil="true" />
  <TraceText>

[ActivityFeeds.Plugins: ActivityFeeds.Plugins.ActivityClose]
[ac7a03af-2025-e311-8b60-78e3b5101ef1: ActivityFeeds.Plugins.ActivityClose: Create of opportunity]


</TraceText>
</OrganizationServiceFault>

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If anyone have an idea please share with me.

thanks in advance