Error Creating Simple Entity on CRM Online

I am trying to create a simple "custom" case entity in CRM online.  The only thing different is that I changed the primary field to "Case Id" with Type Text and Maximum Length to 20.

Here is the log file

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Unhandled Exception: System.ServiceModel.FaultException`1[[Microsoft.Xrm.Sdk.OrganizationServiceFault, Microsoft.Xrm.Sdk, Version=5.0.0.0, Culture=neutral, PublicKeyToken=31bf3856ad364e35]]: System.Data.SqlClient.SqlException: Microsoft Dynamics CRM has experienced an error. Reference number for administrators or support: #BA7068ADDetail:

<OrganizationServiceFault xmlns:i="www.w3.org/.../XMLSchema-instance" xmlns="schemas.microsoft.com/.../Contracts">

 <ErrorCode>-2147220970</ErrorCode>

 <ErrorDetails xmlns:d2p1="schemas.datacontract.org/.../System.Collections.Generic" />

 <Message>System.Data.SqlClient.SqlException: Microsoft Dynamics CRM has experienced an error. Reference number for administrators or support: #BA7068AD</Message>

 <Timestamp>2013-03-12T17:10:43.5079367Z</Timestamp>

 <InnerFault i:nil="true" />

 <TraceText i:nil="true" />

</OrganizationServiceFault>

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Can you pls help.