Hi,

I'm asking around in the Dev Team here at EPi to see if anyone knows how this can happen.

/Paul.

If you execute the stored procedure netDynamicPropertyTree you should see two or more rows with the same PageID and PropertyName. That is the only way that the stack trace above could happen.

In order to correct this, look in the tblProperty tbale, you can probably find the offenting rows by executing this query:

select P.* from tblProperty AS P
inner join tblPageDefinition AS PD
on P.fkPageDefinitionID = PD.pkID
where PD.Name = 'UIEditorCssPaths'

I hope that this helps!

Is it even possible to create a property with the same name? It's not a duplicate attribute in web.config for the problem sites?

For your information, this is sequential error due to the Dynamic Property system noe being able to initialize itself. The real problem is a dynamic property of type page reference that is set (somewhere) to point to a page which has a link type of none (under the Shortcut tab). When EPiServer loads all dynamic properties, it tries to get the url of that page, and chokes on it because the page has a link type of "No link, only text".

Now, this only happens in an enterprise environment, and only for sites outside the structure with the "offending" page. The site with the value does not have a problem with this, but other sites in the enterprise installation have. The real exception is this:

[InvalidOperationException: Can't set Host property on a UrlBuilder with a relative Path]
   EPiServer.Core.DynamicPropertyTree.Initialize() +535
   EPiServer.Core.DynamicPropertyTree.FindDynamicProperty(String name, PropertyDataCollection properties) +17
   EPiServer.Core.PropertyGetHandler.DefaultPropertyHandler(String name, PropertyDataCollection properties) +210
   EPiServer.Core.PropertyDataCollection.TryGetValue(String name, TProperty& value) +47
   EPiServer.Web.WebControls.PageControlBase.SetupFields() +282
   EPiServer.Web.WebControls.PageControlBase.PrepareData() +13
   EPiServer.Web.WebControls.PageControlBase.GetPages() +10
   EPiServer.Web.WebControls.PageList.CreateChildControls() +29
   EPiServer.Web.WebControls.PageControlBase.DataBind() +286
   System.Web.UI.Control.DataBindChildren() +211
   System.Web.UI.Control.DataBind(Boolean raiseOnDataBinding) +102
   System.Web.UI.Control.DataBind() +15
   System.Web.UI.Control.DataBindChildren() +211
   System.Web.UI.Control.DataBind(Boolean raiseOnDataBinding) +102
   System.Web.UI.Control.DataBind() +15
   System.Web.UI.Control.DataBindChildren() +211
   System.Web.UI.Control.DataBind(Boolean raiseOnDataBinding) +102
   System.Web.UI.Control.DataBind() +15
   System.Web.UI.Control.DataBindChildren() +211
   System.Web.UI.Control.DataBind(Boolean raiseOnDataBinding) +102
   System.Web.UI.Control.DataBind() +15
   System.Web.UI.Control.DataBindChildren() +211
   System.Web.UI.Control.DataBind(Boolean raiseOnDataBinding) +102
   System.Web.UI.Control.DataBind() +15
   MySite.Default.OnLoad(EventArgs e) +80
   System.Web.UI.Control.LoadRecursive() +50
   System.Web.UI.Page.ProcessRequestMain(Boolean includeStagesBeforeAsyncPoint, Boolean includeStagesAfterAsyncPoint) +627

Note, the workaround is to not use "No link, only text" if you have dynamic properties of this type in an enterprise solution. Obviously a bug :-)