Hi,

I have placed this wonderful extension in one of my solutions, but when I create new users in Umbraco they get the following error when they try to change content in Umbraco Backend.

Server Error in '/' Application.
            
Object reference not set to an instance of an object. 
Description: An unhandled exception occurred during 
the execution of the current web request. Please review the stack trace 
for more information about the error and where it originated in the 
code.

Exception Details: System.NullReferenceException: Object reference not set to an instance of an object.

Source Error:   

               

                  

                      

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.

                  
               
            
        
Stack Trace:         

               

                  

                      
[NullReferenceException: Object reference not set to an instance of an object.]
   uComponents.Core.DataTypes.MultiNodeTreePicker.BaseTreeExtensions.GetStartNodeId(BaseTree tree, Content definedStartNode, Content userStartNode, Int32 userStartNodeId) +146
   uComponents.Core.DataTypes.MultiNodeTreePicker.FilteredMediaTree.get_StartNodeID() +86
   umbraco.cms.presentation.Trees.XmlTreeNode.CreateRoot(BaseTree bTree) +80
   umbraco.cms.presentation.Trees.BaseTree.CreateRootNode() +38
   umbraco.cms.presentation.Trees.BaseTree.Initialize() +270
   umbraco.cms.presentation.Trees.BaseTree.get_RootNode() +37
   umbraco.cms.presentation.Trees.BaseTree.SetTreeParameters(ITreeService treeParams) +252
   umbraco.controls.Tree.TreeControl.Initialize() +607
   umbraco.controls.Tree.TreeControl.OnPreRender(EventArgs e) +109
   uComponents.Core.Shared.Tree.CustomTreeControl.OnPreRender(EventArgs e) +15
   System.Web.UI.Control.PreRenderRecursiveInternal() +80
   System.Web.UI.Control.PreRenderRecursiveInternal() +171
   System.Web.UI.Control.PreRenderRecursiveInternal() +171
   System.Web.UI.Control.PreRenderRecursiveInternal() +171
   System.Web.UI.Control.PreRenderRecursiveInternal() +171
   System.Web.UI.Control.PreRenderRecursiveInternal() +171
   System.Web.UI.Control.PreRenderRecursiveInternal() +171
   System.Web.UI.Control.PreRenderRecursiveInternal() +171
   System.Web.UI.Control.PreRenderRecursiveInternal() +171
   System.Web.UI.Control.PreRenderRecursiveInternal() +171
   System.Web.UI.Control.PreRenderRecursiveInternal() +171
   System.Web.UI.Control.PreRenderRecursiveInternal() +171
   System.Web.UI.Control.PreRenderRecursiveInternal() +171
   System.Web.UI.Control.PreRenderRecursiveInternal() +171
   System.Web.UI.Page.ProcessRequestMain(Boolean includeStagesBeforeAsyncPoint, Boolean includeStagesAfterAsyncPoint) +842








Version Information: Microsoft .NET Framework Version:2.0.50727.4016; ASP.NET Version:2.0.50727.4016

All the pages that's not using uComponents work with other users, without any errors.The error happens when I try to create new content or edit existing content.

I'm running Umbraco ver 3.5.2 with ASP.Net 3.5

Anyone tried this scenario and can someone help me out?

Kind Regards,

Niels