The full error is...
Error Creating Control - UP1 Session state can only be used when enableSessionState is set to true, either in a configuration file or in the Page directive. Please also make sure that System.Web.SessionStateModule or a custom session state module is included in the <configuration>\<system.web>\<httpModules> section in the application configuration.
I have tried setting the page directive and controls to have enableSessionState = "true"
and that does not seem to work.The page builds and runs fine, it is just the design time that is throwing the error and not displaying the controls.
I have also copied all the code into a new page and that fixes the design time problem for a couple days and then design time throws this error again
any help is greatly appreciated!!!