Operation is not valid due to the current state of the object in Enterprise portal in Dynamics AX

Question

I am getting following error in enterprise portal in Dynamics AX

Operation is not valid due to the current state of the object.

Microsoft.Dynamics.Framework.Portal

   at Microsoft.Dynamics.Framework.Portal.UI.WebControls.AxFilter.GetFilterStringFromPostBackValue(String postBackValue)
   at Microsoft.Dynamics.Framework.Portal.UI.WebControls.AxFilter.OnLoad(EventArgs e)
   at System.Web.UI.Control.LoadRecursive()
   at System.Web.UI.Page.ProcessRequestMain(Boolean includeStagesBeforeAsyncPoint, Boolean includeStagesAfterAsyncPoint)

Answer 1

I noticed that the error appears in the modal windows. You can try to set the property <dynamics:AxGridView ShowFilter="false"/> and error disappears