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HomeHomeGetting StartedGetting StartedInstalling DNN ...Installing DNN ...CanCan't install on Windows 7 - DNN Community 5.01.04
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11/18/2009 3:20 PM
 

When I go thru all of the set up steps and then try to hit the url http://localhost/dotnetnuke I get the folowwing:

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:

The source code that generated this unhandled exception can only be shown when compiled in debug mode. To enable this, please follow one of the below steps, then request the URL:

1. Add a "Debug=true" directive at the top of the file that generated the error. Example:

  <%@ Page Language="C#" Debug="true" %>

or:

2) Add the following section to the configuration file of your application:

<configuration>
   <system.web>
       <compilation debug="true"/>
   </system.web>
</configuration>

Note that this second technique will cause all files within a given application to be compiled in debug mode. The first technique will cause only that particular file to be compiled in debug mode.

Important: Running applications in debug mode does incur a memory/performance overhead. You should make sure that an application has debugging disabled before deploying into production scenario.

Stack Trace:

[NullReferenceException: Object reference not set to an instance of an object.]
   DotNetNuke.Common.Utilities.Config.GetConnectionString(String name) +50
   DotNetNuke.Common.Utilities.Config.GetConnectionString() +38
   DotNetNuke.Data.SqlDataProvider..ctor(Boolean useConfig) +105
   DotNetNuke.Data.SqlDataProvider..ctor() +10

[TargetInvocationException: Exception has been thrown by the target of an invocation.]
   System.RuntimeTypeHandle.CreateInstance(RuntimeType type, Boolean publicOnly, Boolean noCheck, Boolean& canBeCached, RuntimeMethodHandle& ctor, Boolean& bNeedSecurityCheck) +0
   System.RuntimeType.CreateInstanceSlow(Boolean publicOnly, Boolean fillCache) +86
   System.RuntimeType.CreateInstanceImpl(Boolean publicOnly, Boolean skipVisibilityChecks, Boolean fillCache) +230
   System.Activator.CreateInstance(Type type, Boolean nonPublic) +67
   System.RuntimeType.CreateInstanceImpl(BindingFlags bindingAttr, Binder binder, Object[] args, CultureInfo culture, Object[] activationAttributes) +1051
   System.Activator.CreateInstance(Type type, BindingFlags bindingAttr, Binder binder, Object[] args, CultureInfo culture, Object[] activationAttributes) +111
   System.RuntimeType.InvokeMember(String name, BindingFlags bindingFlags, Binder binder, Object target, Object[] providedArgs, ParameterModifier[] modifiers, CultureInfo culture, String[] namedParams) +7651343
   System.Type.InvokeMember(String name, BindingFlags invokeAttr, Binder binder, Object target, Object[] args, CultureInfo culture) +36
   DotNetNuke.Framework.Reflection.CreateInstance(Type Type) +27
   DotNetNuke.ComponentModel.SingletonComponentBuilder.CreateInstance() +14
   DotNetNuke.ComponentModel.SingletonComponentBuilder.BuildComponent() +16
   DotNetNuke.ComponentModel.SimpleContainer.GetComponent(IComponentBuilder builder) +18
   DotNetNuke.ComponentModel.SimpleContainer.GetComponent(Type contractType) +81
   DotNetNuke.ComponentModel.AbstractContainer.GetComponent() +55
   DotNetNuke.ComponentModel.ComponentFactory.GetComponent() +63
   DotNetNuke.Common.Globals.GetStatus() +61
   DotNetNuke.Common.Initialize.InitializeApp(HttpApplication app) +424
   DotNetNuke.Common.Initialize.Init(HttpApplication app) +152
   DotNetNuke.Common.Global.Global_BeginRequest(Object sender, EventArgs e) +560
   System.Web.SyncEventExecutionStep.System.Web.HttpApplication.IExecutionStep.Execute() +68
   System.Web.HttpApplication.ExecuteStep(IExecutionStep step, Boolean& completedSynchronously) +75

Server Error in '/dotnetnuke' Application.

Object reference not set to an instance of an object.

 


Version Information: Microsoft .NET Framework Version:2.0.50727.4927; ASP.NET Version:2.0.50727.4927

 
New Post
11/18/2009 4:40 PM
 

 What Package of DNN did you use? Install?

You might check to see that all the DLLs that you see in the ZIP file's BIN folder exist in your websites/bin folder


Chris Hammond
Former DNN Corp Employee, MVP, Core Team Member, Trustee
Christoc.com Software Solutions DotNetNuke Module Development, Upgrades and consulting.
dnnCHAT.com a chat room for DotNetNuke discussions
 
New Post
11/19/2009 4:11 AM
 

 make sure, Dotnetnuke has been installed in the root of a virtual directory which is configured to be an application.


Cheers from Germany,
Sebastian Leupold

dnnWerk - The DotNetNuke Experts   German Spoken DotNetNuke User Group

Speed up your DNN Websites with TurboDNN
 
New Post
11/19/2009 1:20 PM
 

Keep in mind that IIS 7.5 no longer defaults to the Network Service account for the application pool.  You need to ensure the file/folder permissions are granted for the proper application pool account.

Jeff

 
New Post
11/19/2009 4:14 PM
 

You might also try the Microsoft Web Platform Installer

http://www.microsoft.com/web/gallery/DotNetNuke.aspx

It installs Community 5.1.4 and does all the setup work for you ... couldn't be easier.

 
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