"Item with the same key" when viewing one page

I recently upgraded to 4.2 and have been having a number of issues. One that I need some help with is occurring when I'm logged in and try to view our main home page. I'm getting the error pasted below.

I have already inspected the database to ensure that there aren't duplicate versions of the news items.

Any ideas?

------------------------------

An item with the same key has already been added.

[ArgumentException: An item with the same key has already been added.]
   System.Collections.Generic.Dictionary`2.Insert(TKey key, TValue value, Boolean add) +12676752
   System.Collections.Generic.Dictionary`2.System.Collections.Generic.ICollection<System.Collections.Generic.KeyValuePair<TKey,TValue>>.Add(KeyValuePair`2 keyValuePair) +30
   Telerik.Sitefinity.Web.UI.PublicControls.BrowseAndEdit.ContentBrowseAndEditToolbar.ManageMode(BrowseAndEditToolbarMode mode, String controlID, String commandName, SecurityActionTypes securityType) +1114
   Telerik.Sitefinity.Web.UI.PublicControls.BrowseAndEdit.ContentBrowseAndEditToolbar.InitializeCommands() +119
   Telerik.Sitefinity.Web.UI.PublicControls.BrowseAndEdit.ContentBrowseAndEditToolbar.Configure(ContentView host, Content contentItem, Content parentItem) +1056
   Telerik.Sitefinity.Web.UI.PublicControls.BrowseAndEdit.BrowseAndEditManagerExtensions.AddConfiguredContentBrowseAndEditToolBar(BrowseAndEditManager manager, Content contentItem, ContentView host, ContentBrowseAndEditToolbar toolbar, Content parentItem) +45
   Telerik.Sitefinity.Modules.News.Web.UI.MasterListView.NewsList_DataBound(Object sender, EventArgs e) +379
   Telerik.Web.UI.RadListView.PerformSelect() +217
   System.Web.UI.Control.LoadRecursive() +95
   System.Web.UI.Control.LoadRecursive() +190
   System.Web.UI.Control.LoadRecursive() +190
   System.Web.UI.Control.LoadRecursive() +190
   System.Web.UI.Control.LoadRecursive() +190
   System.Web.UI.Control.LoadRecursive() +190
   System.Web.UI.Control.LoadRecursive() +190
   System.Web.UI.Control.LoadRecursive() +190
   System.Web.UI.Control.LoadRecursive() +190
   System.Web.UI.Page.ProcessRequestMain(Boolean includeStagesBeforeAsyncPoint, Boolean includeStagesAfterAsyncPoint) +2760

Hi Josh Anderson,

Please try to delete your cookies/temp files and check if the problem still exists.

To to this:
1.IE>Tools menu>Internet Options
2. General Tab> Browsing History section > Click Delete button.
3. Select Cookies(or all) and click Delete

1. Firefox>Tools menu
2. Click Clear Recent History - select  Cookies (or all)
3. Click Clear Now or  use Ctrl+Shift+Delete

 

That did not work. This issue occurs in every browser on every OS I've tried (Chrome, Firefox, Safari, IE on Mac OSX and Win7). It's likely not a client-side issue.

To be more clear, this error does not occur when attempting to edit the page via the dashboard, only when viewing the page when you're logged in (which generates the edit-in-place controls).

Incidentally, editing the page via the dashboard fails, too, but not with an error. It shows content blocks that don't exist in the actual page and no controls are clickable. I assumed it was some sort of javascript conflict, but perhaps it's all related.

Josh

Hi Josh Anderson,

Usually controls are not editable when they are placed in Page Template. Could you please check if there are duplicated  IDs of the controls placed in the page? To check this:
- select any control and click Edit>Advanced
- go to 'ID' field and compare the IDs of all controls.
Change the ID if already exists.

I'd love to be able to do that, but right now I can't edit the page at all, so unless there's a way I can find those IDs in the database I'm not going to be able to perform the requested task without some help fixing the other editing problem. In any case, I have my doubts that it's a control ID issue anyway. If you look at the stack trace it appears to be throwing an error when databinding the news items. The error that there's a duplicate item seems to suggest that it's an issue with a news item being added to the dictionary with a duplicate key.

So, on to my problem editing...

If I go to the Pages section of the dashboard and click to edit the home page, I get what you see in the attached file. The layout RadDock items are visible, with dummy content that doesn't actually appear in the real site (which you can view at http://www.telephonypartners.com). Nothing is clickable. When I click "Back to Pages" nothing happens. Nor does anything happen when you click the Layout button, or any of the widgets, or the edit icon on the content blocks. I have to use the browser back button, which results in the page remaining locked, so I then have to unlock the page.

I have removed all javascript from the master page to ensure that it's not conflicting and have confirmed using Firebug that nothing has been added other than the Telerik scripts.

Hello Josh Anderson,

Could you please, send us the whole project (project files, database, backend credentials) to debug the issue locally ?

Many thanks in advance!
Greetings,

Hi Josh Anderson,

Thank you for giving us this extra information, it was really helpful to identify the cause of your problems. We have manage to reproduce the problem, and it is logged for our next official release Sitefintiy 4.3 that is due October according to our public Sitefinity roadmap.

Thank you for contacting us, and please excuse us for the inconvenience, we will do our best to resolve your issue as soon as possible.

Best wishes,
Hristo Borisov
the Telerik team

Do you know of any workaround? Right now I have no way of editing that page since I get an error when doing edit-in-place and I get the broken interface when editing from the administrator dashboard.

Do you still need me to send in the project and DB since you were able to reproduce the error?

Josh

Hi Josh Anderson,

Yes, can you provide us with (project files, database, back-end credentials) to debug the issue locally and try to propose a fix of  the problem.

Many thanks!

Regards,
Milena
the Telerik team