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.

[ArgumentException: An item with the same key has already been added.]

   System.ThrowHelper.ThrowArgumentException(ExceptionResource resource) +51

   System.Collections.Generic.Dictionary`2.Insert(TKey key, TValue value, Boolean add) +7464300

   System.Collections.ObjectModel.KeyedCollection`2.AddKey(TKey key, TItem item) +93

   System.Collections.ObjectModel.KeyedCollection`2.InsertItem(Int32 index, TItem item) +38

   System.Collections.ObjectModel.Collection`1.Add(T item) +117

   DotNetNuke.ComponentModel.SimpleContainer.AddBuilder(Type contractType, IComponentBuilder builder) +111

   DotNetNuke.ComponentModel.SimpleContainer.RegisterComponentInstance(String name, Type contractType, Object instance) +121

   DotNetNuke.ComponentModel.AbstractContainer.RegisterComponentInstance(Object instance) +82

   DotNetNuke.ComponentModel.ComponentFactory.RegisterComponentInstance(Object instance) +77

   DotNetNuke.Security.Membership.DNNRoleProvider..ctor() +188

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.

[NullReferenceException: Object reference not set to an instance of an object.]

   DotNetNuke.Entities.Tabs.TabController.GetTabByTabPath(Int32 portalId, String tabPath) +15

   DotNetNuke.HttpModules.UrlRewriteModule.RewriteUrl(HttpApplication app) +2453

   DotNetNuke.HttpModules.UrlRewriteModule.OnBeginRequest(Object s, EventArgs e) +809

   System.Web.SyncEventExecutionStep.System.Web.HttpApplication.IExecutionStep.Execute() +68

   System.Web.HttpApplication.ExecuteStep(IExecutionStep step, Boolean& completedSynchronously) +75