Hi!

We upgraded our production website a few weeks ago to DNN 5.1.2 and when I look at the event viewer for the site, I see a lot of Page Load Exceptions. See below. I googled it, it seems like I am not the only one who is having this issue. However I did not see an immediate solution / recommendation.

Any ideas are appreciated.

Thank you!

Yulia

UserAgent: Mozilla/4.0 (compatible; MSIE 7.0; Windows NT 5.1; GTB6; .NET CLR 1.1.4322; .NET CLR 2.0.50727; .NET CLR 3.0.04506.30; .NET CLR 3.0.04506.648; .NET CLR 3.0.4506.2152; .NET CLR 3.5.30729; InfoPath.2)
DefaultDataProvider: DotNetNuke.Data.SqlDataProvider, DotNetNuke.SqlDataProvider
ExceptionGUID: 09e1e230-22bb-42a9-bb0f-20f9b6c98716
InnerException: Failed to load view_state. The control tree into which view_state is being loaded must match the control tree that was used to save view_state during the previous request. For example, when adding controls dynamically, the controls added during a post-back must match the type and position of the controls added during the initial request.
FileName: 
FileLineNumber: 0
FileColumnNumber: 0
Method: System.Web.UI.Control.Loadview_stateRecursive
StackTrace: 
Message: DotNetNuke.Services.Exceptions.PageLoadException: Failed to load view_state. The control tree into which view_state is being loaded must match the control tree that was used to save view_state during the previous request. For example, when adding controls dynamically, the controls added during a post-back must match the type and position of the controls added during the initial request. ---> System.Web.HttpException: Failed to load view_state. The control tree into which view_state is being loaded must match the control tree that was used to save view_state during the previous request. For example, when adding controls dynamically, the controls added during a post-back must match the type and position of the controls added during the initial request. at System.Web.UI.Control.Loadview_stateRecursive(Object savedState) at System.Web.UI.Control.LoadChildview_stateByIndex(ArrayList childState) at System.Web.UI.Control.Loadview_stateRecursive(Object savedState) at System.Web.UI.Control.LoadChildview_stateByIndex(ArrayList childState) at System.Web.UI.Control.Loadview_stateRecursive(Object savedState) at System.Web.UI.Control.LoadChildview_stateByIndex(ArrayList childState) at System.Web.UI.Control.Loadview_stateRecursive(Object savedState) at System.Web.UI.Control.LoadChildview_stateByIndex(ArrayList childState) at System.Web.UI.Control.Loadview_stateRecursive(Object savedState) at System.Web.UI.Control.LoadChildview_stateByIndex(ArrayList childState) at System.Web.UI.Control.Loadview_stateRecursive(Object savedState) at System.Web.UI.Control.LoadChildview_stateByIndex(ArrayList childState) at System.Web.UI.Control.Loadview_stateRecursive(Object savedState) at System.Web.UI.Control.LoadChildview_stateByIndex(ArrayList childState) at System.Web.UI.Control.Loadview_stateRecursive(Object savedState) at System.Web.UI.Control.LoadChildview_stateByIndex(ArrayList childState) at System.Web.UI.Control.Loadview_stateRecursive(Object savedState) at System.Web.UI.Control.LoadChildview_stateByIndex(ArrayList childState) at System.Web.UI.Control.Loadview_stateRecursive(Object savedState) at System.Web.UI.Page.LoadAllState() at System.Web.UI.Page.ProcessRequestMain(Boolean includeStagesBeforeAsyncPoint, Boolean includeStagesAfterAsyncPoint) --- End of inner exception stack trace ---

 I've got the same issue from my 4.9.5 to DNN 5.2.1 upgrade- site runs like a dog, I can't log in or register on certain pages and it falls over with this message most of the time...

Entrepreneur

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