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HomeHomeOur CommunityOur CommunityGeneral Discuss...General Discuss...Page Load Exception - Value cannot be null. Parameter name: StringPage Load Exception - Value cannot be null. Parameter name: String
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9/19/2009 10:31 AM
 
SingingSnail

Joined: 12/19/2007
Posts: 7

I tried the fix provided and it didn't do anything for me. After looking at all the examples in App_Browsers - I created a file with the content below (which should cover my particular issue with the Pingdon spider) and it had no affect at all. Even after restarting the DNN app..

<?xml version="1.0" encoding="utf-8" ?>
<browsers>
   <!--
    sample text: "Pingdom.com_bot_version_1.4_(http://www.pingdom.com/)"
     -->
   <browser id="Pingdom" parentID="PageLoadException">
      <identification>
         <userAgent match="Pingdom.com" />
      </identification>
      <capture></capture>
      <capabilities>
         <capability name="crawler" value="true" />
         <capability name="browser" value="Pingdom" />
         <capability name="version" value="0.0" />
         <capability name="majorversion" value="0" />
         <capability name="minorversion" value="0" />
         <capability name="isMobileDevice" value="false" />
      </capabilities>
   </browser>
</browsers>

 
 
New Post
10/1/2009 3:18 PM
 
Kirill Shurevich


www.laborion.com
Joined: 2/28/2008
Posts: 23

Hello , I think i got same errors from different spaiders and among them is (http://www.google.com/bot.html ))
AssemblyVersion: 04.09.05
PortalID: 0
PortalName: MISIS
UserID: -1
UserName:
ActiveTabID: 36
ActiveTabName: MISIS
RawURL: /tabid/36/ctl/Details/mid/3539/ItemID/1846/Default.aspx
AbsoluteURL: /Default.aspx
AbsoluteURLReferrer:
UserAgent: Mozilla/5.0 (compatible; Googlebot/2.1; +http://www.google.com/bot.html)
DefaultDataProvider: DotNetNuke.Data.SqlDataProvider, DotNetNuke.SqlDataProvider
ExceptionGUID: 55b5d3b9-6c8f-48ee-98b7-fc3fe7f9f671
InnerException: Unhandled Error:
FileName:
FileLineNumber: 0
FileColumnNumber: 0
Method: EfficionConsulting.Articles.ArticleDetails.Page_Load
StackTrace:
Message: System.Exception: Unhandled Error: ---> DotNetNuke.Services.Exceptions.PageLoadException: Object reference not set to an instance of an object. ---> System.NullReferenceException: Object reference not set to an instance of an object.at EfficionConsulting.Articles.ArticleDetails.Page_Load(Object sender, EventArgs e)at System.Web.UI.Control.OnLoad(EventArgs e)at System.Web.UI.Control.LoadRecursive()at System.Web.UI.Control.LoadRecursive()at System.Web.UI.Control.LoadRecursive()at System.Web.UI.Control.LoadRecursive()at System.Web.UI.Control.LoadRecursive()at System.Web.UI.Control.LoadRecursive()at System.Web.UI.Control.LoadRecursive()at System.Web.UI.Control.LoadRecursive()at System.Web.UI.Control.LoadRecursive()at System.Web.UI.Control.LoadRecursive()at System.Web.UI.Page.ProcessRequestMain(Boolean includeStagesBeforeAsyncPoint, Boolean includeStagesAfterAsyncPoint)--- End of inner exception stack trace ---at DotNetNuke.Services.Exceptions.Exceptions.ProcessPageLoadException(Exception exc, String URL)at DotNetNuke.Framework.PageBase.Page_Error(Object Source, EventArgs e)at System.Web.UI.TemplateControl.OnError(EventArgs e)at System.Web.UI.Page.HandleError(Exception e)at System.Web.UI.Page.ProcessRequestMain(Boolean includeStagesBeforeAsyncPoint, Boolean includeStagesAfterAsyncPoint)at System.Web.UI.Page.ProcessRequest(Boolean includeStagesBeforeAsyncPoint, Boolean includeStagesAfterAsyncPoint)at System.Web.UI.Page.ProcessRequest()at System.Web.UI.Page.ProcessRequestWithNoAssert(HttpContext context)at System.Web.UI.Page.ProcessRequest(HttpContext context)at ASP.default_aspx.ProcessRequest(HttpContext context)at System.Web.HttpApplication.CallHandlerExecutionStep.System.Web.HttpApplication.IExecutionStep.Execute()at System.Web.HttpApplication.ExecuteStep(IExecutionStep step, Boolean& completedSynchronously)--- End of inner exception stack trace ---
Source:
Имя сервера: MISIS1
 
New Post
10/10/2009 9:19 AM
 
SingingSnail

Joined: 12/19/2007
Posts: 7

I just upgraded from 4.9.5 to 5.1.4 and this issue seems to have gone away!
 
New Post
10/27/2009 8:57 AM
 
Karl Schultz

Joined: 11/20/2006
Posts: 3

Is there any patch or workaround for this issue for DNN 4.9.5???
 
New Post
11/27/2009 12:43 PM
 
SingingSnail

Joined: 12/19/2007
Posts: 7

I was wrong about this being fixed in 5.1.4 ... it just seems to be less frequent - but its still there.

To keep the db small I only keep the last 25 Page Load Exception errors ... so I cant say if the upgrade cured some spiders and not others.

The only one that seem to affect me now is whois.domaintools.com
 
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HomeHomeOur CommunityOur CommunityGeneral Discuss...General Discuss...Page Load Exception - Value cannot be null. Parameter name: StringPage Load Exception - Value cannot be null. Parameter name: String


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