While installing dotnetnuke, my browsing get slow. Then at some moment it hang. Everything seems ok since i folowing the steps in professional dotnetnuke 40.0 book carefully. At some monent, i got the bellow error, i guess it is bcs the install didn't continue right. I am new to the whole dotnetnuke and portals in generals, so please i need help to get started and fix this problem. Thanks

Server Error in '/DotNetNuke' 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.] DotNetNuke.Entities.Portals.PortalSettings..ctor(Int32 tabID, PortalAliasInfo objPortalAliasInfo) +48 DotNetNuke.HttpModules.UrlRewriteModule.OnBeginRequest(Object s, EventArgs e) +2969 System.Web.SyncEventExecutionStep.System.Web.HttpApplication.IExecutionStep.Execute() +68 System.Web.HttpApplication.ExecuteStep(IExecutionStep step, Boolean& completedSynchronously) +75

I was reading the book professional dotnetnuke 4.0, i am using the install package downloaded from here, followed the steps, but like i said, the configuration wizard is browsing really slow and like i mentioned before, it crashs with the error...

What you mean by "autoinstall" ? In my case i already have a hosting company that offer dotnetnuke as a plugin, so i can use it there (not sure about the version they offer, it is webhost4life), but anyway, i want to try everything locally, since i am new to portals in generals and dotnetnuke in particular, i want to see the potential before doing building a site with it.

Thanks