object reference not set to an instance of an object after upgrade

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Stig Kulvedrøsten 48 posts 69 karma points

Aug 05, 2010 @ 13:57

I upgraded a site from 4.0.x to 4.5.1 and now I get a

Object reference not set to an instance of an object.

when I try to edit content in the backend.
Anyone got the same problem? What could cause this? Custom controls? I've seen similar post, but none related to upgrade to 4.5.1

Stacktrace:

[NullReferenceException: Object reference not set to an instance of an object.]
   umbraco.controls.ContentControl.addControlNew(Property p, TabPage tp, String Caption) +248
   umbraco.controls.ContentControl.CreateChildControls() +1428
   System.Web.UI.Control.EnsureChildControls() +181
   umbraco.controls.ContentControl.OnInit(EventArgs e) +126
   System.Web.UI.Control.InitRecursive(Control namingContainer) +132
   System.Web.UI.Control.AddedControl(Control control, Int32 index) +276
   umbraco.cms.presentation.editContent.OnInit(EventArgs e) +2117
   System.Web.UI.Control.InitRecursive(Control namingContainer) +132
   System.Web.UI.Page.ProcessRequestMain(Boolean includeStagesBeforeAsyncPoint, Boolean includeStagesAfterAsyncPoint) +1953

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Fredrik Esseen 610 posts 906 karma points

Aug 05, 2010 @ 14:25

0

It sounds that a datatype that you use on that document type is missing. For me this happened when I used media Picker with Preview on a document but the dll was missing. Did you delete all dlls prior to upgrade perhaps..?

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Stig Kulvedrøsten 48 posts 69 karma points

Aug 05, 2010 @ 14:26

0

All dll's was deleted yes, and my page uses Media Picker with Preview :)

Worked like a charm! Thanks :)

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