Hello Joe,

The following error was produced by making changes to existing content and creating a history of previous changes then deleting all history of previous content.

Error

===

2009-08-23 12:10:23,380 ERROR mojoPortal.Business.WebHelpers.UserSignInHandlers.UserSignInHandlerProviderManager - System.Configuration.Provider.ProviderException: No UserSignInHandlerProviderCollection found.
   at mojoPortal.Business.WebHelpers.UserSignInHandlers.UserSignInHandlerProviderManager.Initialize()
2009-08-23 12:19:52,221 ERROR mojoPortal.Business.WebHelpers.IndexBuilderManager - System.Configuration.Provider.ProviderException: No IndexBuilderProvider found.
   at mojoPortal.Business.WebHelpers.IndexBuilderManager.Initialize()
2009-08-23 12:19:52,626 INFO mojoPortal.Web.WebTaskManager - deserialized WebTaskManager task
2009-08-23 12:19:52,642 INFO mojoPortal.Web.WebTaskManager - Queued WebTaskManager on a new thread
2009-08-23 12:19:52,751 INFO mojoPortal.Business.WebHelpers.IndexWriterTask - deserialized IndexWriterTask task
2009-08-23 12:19:52,751 INFO mojoPortal.Business.WebHelpers.IndexWriterTask - Queued IndexWriterTask on a new thread
2009-08-23 12:20:11,690 ERROR mojoPortal.Web.mojoBasePage - /HtmlEdit.aspx?mid=0&pageid=0
System.ArgumentException: Invalid postback or callback argument.  Event validation is enabled using <pages enableEventValidation="true"/> in configuration or <%@ Page EnableEventValidation="true" %> in a page.  For security purposes, this feature verifies that arguments to postback or callback events originate from the server control that originally rendered them.  If the data is valid and expected, use the ClientScriptManager.RegisterForEventValidation method in order to register the postback or callback data for validation.
   at System.Web.UI.ClientScriptManager.ValidateEvent(String uniqueId, String argument)
   at System.Web.UI.Control.ValidateEvent(String uniqueID, String eventArgument)
   at System.Web.UI.WebControls.Button.RaisePostBackEvent(String eventArgument)
   at System.Web.UI.WebControls.Button.System.Web.UI.IPostBackEventHandler.RaisePostBackEvent(String eventArgument)
   at System.Web.UI.Page.RaisePostBackEvent(IPostBackEventHandler sourceControl, String eventArgument)
   at System.Web.UI.Page.RaisePostBackEvent(NameValueCollection postData)
   at System.Web.UI.Page.ProcessRequestMain(Boolean includeStagesBeforeAsyncPoint, Boolean includeStagesAfterAsyncPoint)
2009-08-23 12:20:11,706 ERROR mojoPortal.Web.Global - /HtmlEdit.aspx?mid=0&pageid=0
System.ArgumentException: Invalid postback or callback argument.  Event validation is enabled using <pages enableEventValidation="true"/> in configuration or <%@ Page EnableEventValidation="true" %> in a page.  For security purposes, this feature verifies that arguments to postback or callback events originate from the server control that originally rendered them.  If the data is valid and expected, use the ClientScriptManager.RegisterForEventValidation method in order to register the postback or callback data for validation.
   at System.Web.UI.ClientScriptManager.ValidateEvent(String uniqueId, String argument)
   at System.Web.UI.Control.ValidateEvent(String uniqueID, String eventArgument)
   at System.Web.UI.WebControls.Button.RaisePostBackEvent(String eventArgument)
   at System.Web.UI.WebControls.Button.System.Web.UI.IPostBackEventHandler.RaisePostBackEvent(String eventArgument)
   at System.Web.UI.Page.RaisePostBackEvent(IPostBackEventHandler sourceControl, String eventArgument)
   at System.Web.UI.Page.RaisePostBackEvent(NameValueCollection postData)
   at System.Web.UI.Page.ProcessRequestMain(Boolean includeStagesBeforeAsyncPoint, Boolean includeStagesAfterAsyncPoint)