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  • Nik Wahlberg 639 posts 1237 karma points MVP
    Oct 25, 2009 @ 02:23
    Nik Wahlberg
    0

    Yellow Screen of Death - sporadic

    API Questions

    Hi al,

    I just deployed a new site and am running into a seemingly sporadic issue with the back-office. 

    [NullReferenceException: Object reference not set to an instance of an object.]
       umbraco.controls.GenericProperties.GenericProperty.UpdateInterface() +819
       umbraco.controls.GenericProperties.GenericProperty.Page_Load(Object sender, EventArgs e) +21
       System.Web.Util.CalliHelper.EventArgFunctionCaller(IntPtr fp, Object o, Object t, EventArgs e) +15
       System.Web.Util.CalliEventHandlerDelegateProxy.Callback(Object sender, EventArgs e) +34
       System.Web.UI.Control.OnLoad(EventArgs e) +99
       System.Web.UI.Control.LoadRecursive() +47
       System.Web.UI.Control.LoadRecursive() +131
       System.Web.UI.Control.LoadRecursive() +131
       System.Web.UI.Control.LoadRecursive() +131
       System.Web.UI.Control.LoadRecursive() +131
       System.Web.UI.Control.LoadRecursive() +131
       System.Web.UI.Control.LoadRecursive() +131
       System.Web.UI.Control.LoadRecursive() +131
       System.Web.UI.Control.LoadRecursive() +131
       System.Web.UI.Control.LoadRecursive() +131
       System.Web.UI.Control.LoadRecursive() +131
       System.Web.UI.Control.LoadRecursive() +131
       System.Web.UI.Page.ProcessRequestMain(Boolean includeStagesBeforeAsyncPoint, Boolean includeStagesAfterAsyncPoint) +1061

    This happens (more often than not) when I go to edit a Document Type. Has anyone seen this before? What was the fix?

    Thanks,
    Nik

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  • Aaron Powell 1708 posts 3046 karma points c-trib
    Oct 25, 2009 @ 05:35
    Aaron Powell
    1

    From having a look at the code the only cause I can think of is that you're missing a Data Type from the server which the Database things should exist.

    Can you reproduce it on any particular page each time?

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  • Nik Wahlberg 639 posts 1237 karma points MVP
    Oct 26, 2009 @ 00:12
    Nik Wahlberg
    0

    Slace, thanks. I think this boiled down to the MediaPicker w/ Preview package that required .NET 3.5. I have not seen this again since I  installed 3.5

    Thanks,
    Nik

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