I have spent all day trying to install DNN 4.0.3. Every time the system report the following error. Can someone experienced please help me sort this out? Much obliged.
Alfonso Fung, Hong Kong
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:
Line 84:
Line 85: 'Determine the Upgrade status and redirect to Install.aspx
Line 86: Select Case GetUpgradeStatus()
Line 87: Case Globals.UpgradeStatus.Install, Globals.UpgradeStatus.Upgrade
Line 88: If AutoUpgrade Then
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Source File: C:\DotNetNuke\App_Code\Global.asax.vb Line: 86
Stack Trace:
[NullReferenceException: Object reference not set to an instance of an object.]
DotNetNuke.Common.Utilities.Config.GetConnectionString(String name) +49
DotNetNuke.Data.SqlDataProvider..ctor() +126
[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) +103
System.RuntimeType.CreateInstanceImpl(Boolean publicOnly, Boolean skipVisibilityChecks, Boolean fillCache) +261
System.Activator.CreateInstance(Type type, Boolean nonPublic) +66
DotNetNuke.Framework.Reflection.CreateObject(String TypeName, String CacheKey, Boolean UseCache) +233
DotNetNuke.Framework.Reflection.CreateObject(String ObjectProviderType, String ObjectProviderName, String ObjectNamespace, String ObjectAssemblyName, Boolean UseCache) +571
DotNetNuke.Data.DataProvider.CreateProvider() +39
DotNetNuke.Data.DataProvider..cctor() +13
[TypeInitializationException: The type initializer for 'DotNetNuke.Data.DataProvider' threw an exception.]
DotNetNuke.Common.Globals.GetUpgradeStatus() +331
DotNetNuke.Common.Global.CheckVersion() in C:\DotNetNuke\App_Code\Global.asax.vb:86
DotNetNuke.Common.Global.Application_Start(Object Sender, EventArgs E) in C:\DotNetNuke\App_Code\Global.asax.vb:263
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Version Information: Microsoft .NET Framework Version:2.0.50727.42; ASP.NET Version:2.0.50727.42