@Joe,

Here is the error displayed on the web head after upgrade. There are 2 other sites on this particular server and both upgraded without issue. There is an error event for each of the .png files not rendered (all other images render fine.)

The only difference is this is the only site on that server that uses the DNN URLrewrite, the others use iFinity's Rewrite

Application information:
    Application domain: /LM/W3SVC/10/ROOT-3-129346802091894531
    Trust level: Full
    Application Virtual Path: /
    Application Path: C:\inetpub\Websites\NPSocial\Website\
    Machine name: NDD-WEB27
 
Process information:
    Process ID: 2704
    Process name: w3wp.exe
    Account name: IIS APPPOOL\NPSocial
 
Exception information:
    Exception type: NullReferenceException
    Exception message: Object reference not set to an instance of an object.
 
Request information:
    Request URL: http://www.domain.com/Portals/_default/Skins/NDD-ShortBus/images/WhiteBGBox.ML.png
    Request path: /Portals/_default/Skins/NDD-ShortBus/images/WhiteBGBox.ML.png
    User host address: xxx.xxx.xxx.xxx
    User:  
    Is authenticated: False
    Authentication Type:  
    Thread account name: IIS APPPOOL\NPSocial
 
Thread information:
    Thread ID: 14
    Thread account name: IIS APPPOOL\NPSocial
    Is impersonating: False
    Stack trace:    at DotNetNuke.Entities.Portals.PortalSettings..ctor(Int32 tabID, PortalAliasInfo objPortalAliasInfo)
   at DotNetNuke.HttpModules.UrlRewriteModule.OnBeginRequest(Object s, EventArgs e)
   at System.Web.HttpApplication.SyncEventExecutionStep.System.Web.HttpApplication.IExecutionStep.Execute()
   at System.Web.HttpApplication.ExecuteStep(IExecutionStep step, Boolean& completedSynchronously)

Generic, but maybe this will help?

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It looks like how the home page is called.
For example if you go here http://www.educationcreations.net/ you get the error, but if you go here http://www.educationcreations.net/default.aspx you dont.

Be sure to restart the web service not just stop and start the site.

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Best Regards,

Robert J Collins | Co-Founder & President

Netlogic Corporation