CRM 2011 Rollup 6 CRM error trying to create a mobile form

I have tried to create a mobile form on a number of custom entities.  Each time I get an error window like this:

Full Stack:
[InvalidOperationException: Sequence contains no elements]
   at System.Linq.Enumerable.First[TSource](IEnumerable`1 source)
   at Microsoft.Crm.Utility.FormEditorUtility.GetFirstFormHavingLeastOrder(Int32 type, Int32 objectTypeCode)
   at Microsoft.Crm.Mobile.Application.Pages.ConsoleEntityConfig.get_MobileFormEntity()
   at Microsoft.Crm.Mobile.Application.Pages.ConsoleEntityConfig.PopulateAttributeFields()
   at Microsoft.Crm.Mobile.Application.Pages.ConsoleEntityConfig.ConfigurePage()
   at Microsoft.Crm.Application.Controls.AppUIPage.OnPreRender(EventArgs e)
   at System.Web.UI.Control.PreRenderRecursiveInternal()
   at System.Web.UI.Page.ProcessRequestMain(Boolean includeStagesBeforeAsyncPoint, Boolean includeStagesAfterAsyncPoint)

[HttpUnhandledException: Exception of type 'System.Web.HttpUnhandledException' was thrown.]
   at System.Web.UI.Page.HandleError(Exception e)
   at System.Web.UI.Page.ProcessRequestMain(Boolean includeStagesBeforeAsyncPoint, Boolean includeStagesAfterAsyncPoint)
   at System.Web.UI.Page.ProcessRequest(Boolean includeStagesBeforeAsyncPoint, Boolean includeStagesAfterAsyncPoint)
   at System.Web.UI.Page.ProcessRequest()
   at System.Web.UI.Page.ProcessRequest(HttpContext context)
   at System.Web.HttpApplication.CallHandlerExecutionStep.System.Web.HttpApplication.IExecutionStep.Execute()
   at System.Web.HttpApplication.ExecuteStep(IExecutionStep step, Boolean& completedSynchronously)

Other Message:

Error Number:

Source File:
Not available

Line Number:
Not available

Error Trace:
 
Date: 02-06-2012
Time: 16:23:12
Server: crm2011
 
Request URL:
http://crm2011:5555/devEvent7/m/console/entityconfig.aspx?etn=evx_airline

-Art