I discovered that installing Dotnetnuke in IIS 7n is pretty tough. I manged to get things working just when the following error was encountered, then ever since i have been stuck:

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:


Line 102: If AutoUpgrade Then
Line 103: If UseWizard Then
Line 104: Response.Redirect("~/Install/InstallWizard.aspx")
Line 105: Else
Line 106: Response.Redirect("~/Install/Install.aspx?mode=none")


Source File: C:\inetpub\wwwroot\DotNetNuke_04.05.03_Source\Website\App_Code\Global.asax.vb Line: 104

Stack Trace:


[NullReferenceException: Object reference not set to an instance of an object.]
System.Web.HttpHeaderCollection.SetHeader(String name, String value, Boolean replace) +121
System.Web.HttpHeaderCollection.Add(String name, String value) +49
System.Web.HttpResponse.GenerateResponseHeadersForHandler() +162
System.Web.HttpResponse.IntegratedFlush() +10
System.Web.HttpResponse.Flush(Boolean finalFlush) +107
System.Web.HttpResponse.Flush() +17
System.Web.HttpResponse.End() +106
System.Web.HttpResponse.Redirect(String url, Boolean endResponse) +498
System.Web.HttpResponse.Redirect(String url) +6
DotNetNuke.Common.Global.CheckVersion() in C:\inetpub\wwwroot\DotNetNuke_04.05.03_Source\Website\App_Code\Global.asax.vb:104
DotNetNuke.Common.Global.Application_Start(Object Sender, EventArgs E) in C:\inetpub\wwwroot\DotNetNuke_04.05.03_Source\Website\App_Code\Global.asax.vb:321

[HttpException (0x80004005): Object reference not set to an instance of an object.]
System.Web.HttpApplicationFactory.EnsureAppStartCalledForIntegratedMode(HttpContext context, HttpApplication app) +3381770
System.Web.HttpApplication.InitSpecial(HttpApplicationState state, MethodInfo[] handlers, IntPtr appContext, HttpContext context) +167
System.Web.HttpApplicationFactory.GetSpecialApplicationInstance(IntPtr appContext, HttpContext context) +270
System.Web.Hosting.PipelineRuntime.InitializeApplication(IntPtr appContext, IntPtr& errorMessage) +260

[HttpException (0x80004005): Object reference not set to an instance of an object.]
System.Web.HttpRuntime.FirstRequestInit(HttpContext context) +3539851
System.Web.HttpRuntime.EnsureFirstRequestInit(HttpContext context) +69
System.Web.HttpRuntime.ProcessRequestNotificationPrivate(IIS7WorkerRequest wr, HttpContext context) +669

Can anyone point me what did i do wrong or just point me to a location where dotnetnuke installation in iis 7 is clearly explained.
Thanks in advance

Ensure that you have an application setting for "UseWizard"

Also just since you are on IIS 7, ensure that you are running in a classic application pool and that you have given full file permissions to the NetworkService account.

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-Mitchel Sellers
Microsoft MVP, ASPInsider, DNN MVP
CEO/Director of Development - IowaComputerGurus Inc.


Visit mitchelsellers.com for my mostly DNN Blog and support forum.

Visit IowaComputerGurus.com for free DNN Modules, DNN Performance Tips, DNN Consulting Quotes, and DNN Technical Support Services

Mike,

Glad that got you going.  I had the same problem the first time I setup DNN on my Vista machine.

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-Mitchel Sellers
Microsoft MVP, ASPInsider, DNN MVP
CEO/Director of Development - IowaComputerGurus Inc.


Visit mitchelsellers.com for my mostly DNN Blog and support forum.

Visit IowaComputerGurus.com for free DNN Modules, DNN Performance Tips, DNN Consulting Quotes, and DNN Technical Support Services