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HomeHomeUsing DNN Platf...Using DNN Platf...Administration ...Administration ...Server migrationServer migration
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5/20/2013 5:35 PM


I'm having difficulties migrating a DNN instalation. I had to migrate my Windows Server. All my hosting is based on Plesk. My old server was running Windows Web Server 2008 32-bit, ASP.NET version 2.0.50727.0, IIS 7.5. Now is running Windows Web Server 2008 64-bit, ASP.NET version 2.0.50727.4223, IIS 7.5. MS SQL server was MS SQL Server 2005 Express and now is MS SQL Server 2012 Express.

DNN version is 5.5.1, nothing changed. Full permissions were applied to all files (application pool user). Connection string is the same used before, password and user are correct.

I've got several DNN installations (4.8.0) working correctly after migration.

Trying to open DNN returns these errors:


Server Error in '/' 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.HttpModules.UrlRewriteModule.RewriteUrl(HttpApplication app) +5756 DotNetNuke.HttpModules.UrlRewriteModule.OnBeginRequest(Object s, EventArgs e) +820 System.Web.SyncEventExecutionStep.System.Web.HttpApplication.IExecutionStep.Execute() +68 System.Web.HttpApplication.ExecuteStep(IExecutionStep step, Boolean& completedSynchronously) +75 

Version Information: Microsoft .NET Framework Version:2.0.50727.4234; ASP.NET Version:2.0.50727.4223 


Already googled for some clues, nothing worked so far. It seems this issue is mostly identified in 4.8.0 installations.

Can someone point me in the right direction or help me debbug this issue correctly? I'm really out of options here.

Thank you in advance

HomeHomeUsing DNN Platf...Using DNN Platf...Administration ...Administration ...Server migrationServer migration

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