I tried to upgrade my DNN site from version 5.00.01 to version 6.1.3 but I get the following error. Could someone please help me to fix this issue, i really wouls appreciate it. Thanks

Server Error in '/DotNetNuke' 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:

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.]
DotNetNuke.Entities.Portals.PortalInfo.get_HomeDirectoryMapPath() +36
DotNetNuke.Entities.Portals.PortalSettings.GetPortalSettings(Int32 tabID, PortalInfo portal) +869
DotNetNuke.Entities.Portals.PortalSettings..ctor(Int32 tabID, PortalAliasInfo objPortalAliasInfo) +116
DotNetNuke.Common.Globals.GetHostPortalSettings() +86
DotNetNuke.Common.Globals.GetPortalSettings() +98
DotNetNuke.Authentication.ActiveDirectory.HttpModules.AuthenticationModule.OnAuthenticateRequest(Object s, EventArgs e) +51
System.Web.SyncEventExecutionStep.System.Web.HttpApplication.IExecutionStep.Execute() +68
System.Web.HttpApplication.ExecuteStep(IExecutionStep step, Boolean& completedSynchronously) +75

Sebastian,

First i would like to thank you so much for replying to my post.

Second I have a big problem now after i tried to update to version 6.1.3 and it wasn't successfull, I restore back all old files (dnn 5.00.01) 

and after spending a lot of time with my hosting company (http://www.webhost4life.com) they couldn't help me to get my site (www.pmgco.com) back ......Now i get this error:

Server Error in '/DotNetNuke' Application.

Configuration Error

Description: An error occurred during the processing of a configuration file required to service this request. Please review the specific error details below and modify your configuration file appropriately.

Parser Error Message: It is an error to use a section registered as allowDefinition='MachineToApplication' beyond application level. This error can be caused by a virtual directory not being configured as an application in IIS.

Source Error:


Line 100: </system.webServer>
Line 101: <system.web>
Line 102: <machineKey validationKey="13205D484F265C0E9A888328F22CEAA6F1962EA6" decryptionKey="BE177C4D27EAEFB752E7EFB8E905A2C19C9690869528864C" decryption="3DES" validation="SHA1" />
Line 103: <!-- HttpModules for Common Functionality -->
Line 104: <httpModules>

Source File: \\boswinfs05\home\users\web\b2653\whl.pmgadmin\DotNetNuke\app_code\xml\handlers\web.config Line: 102

The webhost Technical Support person told that they did and below is what he told me. I really need help to get the site back even you would like to remote in my computer and fix it that is an option if you would like to do that.

Hello Tamer,

We weren't able to get the site working again. The database has been restored, but I'm not sure what's going wrong with the files. If you can try restoring your site files again, you might have better luck. Please just make sure they are the old version of DNN and not the new version.

Also, we've placed a backup of your database in your home directory and it is named "pmgdotnetnuke_89347_backup_2012_02_02_010029_6291740.bak."