Exchange CU9 Organization Preparation Failes

i have exchange 2010 SP3 installed and it's working fine i need to migrate to exchange 2013

i did manage to install exchange 2013 CU1 any update after that fails with the same error message.

Organization Preparation                                                                                                        FAILED
The following error was generated when "$error.Clear();
initialize-ExchangeUniversalGroups -DomainController $RoleDomainController -ActiveDirectorySplitPermissions $RoleActiveDirectorySplitPermissions

" was run: "System.NullReferenceException: Object reference not set to an instance of an object.
   at Microsoft.Exchange.Management.Tasks.InitializeExchangeUniversalGroups.CreateOrMoveEWPGroup(ADGroup ewp, ADOrganizationalUnit usgContainer)
   at Microsoft.Exchange.Management.Tasks.InitializeExchangeUniversalGroups.InternalProcessRecord()
   at Microsoft.Exchange.Configuration.Tasks.Task.<ProcessRecord>b__b()
   at Microsoft.Exchange.Configuration.Tasks.Task.InvokeRetryableFunc(String funcName, Action func, Boolean terminatePipelineIfFailed)
   at Microsoft.Exchange.Configuration.Tasks.Task.ProcessTaskStage(TaskStage taskStage, Action initFunc, Action mainFunc, Action completeFunc)
   at Microsoft.Exchange.Configuration.Tasks.Task.ProcessRecord()
   at System.Management.Automation.CommandProcessor.ProcessRecord()".

Event Log ID 6
Cmdlet failed. Cmdlet Install-ExchangeOrganization, parameters -Industry "NotSpecified" -PrepareDomain "True" -DomainController "mydc.mydomain.corp" -ActiveDirectorySplitPermissions $null -PrepareOrganization "True" -OrganizationName"mydomain corp".

Event Log ID 6

Cmdlet failed. Cmdlet initialize-ExchangeUniversalGroups, parameters -DomainController "mydc.mydomain.corp" -ActiveDirectorySplitPermissions $null.
thanks daniel