There are certain items in our media folder that return an error message when you click on the node:

Server Error in '/' Application.

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Object reference not set to an instance of an object.
Description: An unhandled exception occurred during the execution of the current web request. Please review the stack trace for more information about the error and where it originated in the code.

Exception Details: System.NullReferenceException: Object reference not set to an instance of an object.

Source Error:

An unhandled exception was generated during the execution of the current web request. Information regarding the origin and location of the exception can be identified using the exception stack trace below.

Stack Trace:


[NullReferenceException: Object reference not set to an instance of an object.]
umbraco.controls.ContentControl.addControlNew(Property p, TabPage tp, String Caption) +54
umbraco.controls.ContentControl..ctor(Content c, publishModes CanPublish, String Id) +736
umbraco.cms.presentation.editMedia.OnInit(EventArgs e) +132
System.Web.UI.Control.InitRecursive(Control namingContainer) +321
System.Web.UI.Page.ProcessRequestMain(Boolean includeStagesBeforeAsyncPoint, Boolean includeStagesAfterAsyncPoint) +692

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Version Information: Microsoft .NET Framework Version:2.0.50727.832; ASP.NET Version:2.0.50727.832