i am unable to qualify leads in my crm online instance. i receive the follow error log.
<s:Envelope xmlns:s="schemas.xmlsoap.org/.../envelope"><s:Body><s:Fault><faultcode>s:Client</faultcode><faultstring xml:lang="en-US">An unexpected error occurred.</faultstring><detail><OrganizationServiceFault xmlns="schemas.microsoft.com/.../Contracts" xmlns:i="www.w3.org/.../XMLSchema-instance"><ErrorCode>-2147220970</ErrorCode><ErrorDetails xmlns:a="schemas.datacontract.org/.../System.Collections.Generic"/><Message>An unexpected error occurred.</Message><Timestamp>2016-02-10T15:22:35.7117885Z</Timestamp><InnerFault><ErrorCode>-2147220970</ErrorCode><ErrorDetails xmlns:a="schemas.datacontract.org/.../System.Collections.Generic"/><Message>System.ArgumentOutOfRangeException: Index was out of range. Must be non-negative and less than the size of the collection.
Parameter name: index</Message><Timestamp>2016-02-10T15:22:35.7117885Z</Timestamp><InnerFault i:nil="true"/><TraceText i:nil="true"/></InnerFault><TraceText i:nil="true"/></OrganizationServiceFault></detail></s:Fault></s:Body></s:Envelope>