Hi,

I upgraded my application to DNN4.0.2 from DNN3.2.
During browsing through my application I'm frequently getting the follwing error:

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Server Error in '/Cdms2.0' Application.

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:

Stack Trace:

[NullReferenceException: Object reference not set to an instance of an object.]

   DotNetNuke.HttpModules.UrlRewriteModule.OnBeginRequest(Object s, EventArgs e) +702

   System.Web.SyncEventExecutionStep.System.Web.HttpApplication.IExecutionStep.Execute() +92

   System.Web.HttpApplication.ExecuteStep(IExecutionStep step, Boolean& completedSynchronously) +64

Version Information: Microsoft .NET Framework Version:2.0.50727.42; ASP.NET Version:2.0.50727.42

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Anyone who come across this error and found the solution for this, kindly let me solve this.

Thanks In Advance,
Vikiboye

I also get this error intermittantly.  My site was born as 4.0.2 so I don't think that the conversion from 3.x is necessarily a factor.  Also, I have made no code changes whatsoever -- just standard DNN modules.

The error occurs randomly in any or all of the pages.  Sometimes I get 3 errors in a row, other times I go for a couple days without a problem.

The exceptions are thrown from all kinds of places, from UI.Utilities to Services.Localization.  The only common element seems to be the "object reference not set to an instance of an object".

I read somewhere that this could be a caching problem so I have tried all of the different host caching levels from no caching to heavy caching.  No affect.

This is making me nervous as the time to go into production nears.  Any suggestions would be appreciated.