We are trying to override the Default 'New Item' form for a SP List. We are doing this by implementing a Custom List Form for a SP List. We have enabled RadEditor to be used for editing items within SP.
When we insert a Custom List Form the form fails. We receive the following error:
[ArgumentNullException: Value cannot be null.
Parameter name: value]
System.Collections.CollectionBase.OnValidate(Object value) +2742430
Telerik.WebControls.RadEditorUtils.ToolbarCollection.OnValidate(Object value) +9
System.Collections.CollectionBase.System.Collections.IList.Remove(Object value) +37
Telerik.WebControls.RadEditorUtils.ToolbarCollection.Remove(Toolbar toolbar) +5
Telerik.SharePoint.ListFieldEditor.RadHtmlListField.OnLoad(EventArgs e) +442
System.Web.UI.Control.LoadRecursive() +47
System.Web.UI.Control.LoadRecursive() +131
System.Web.UI.Control.LoadRecursive() +131
System.Web.UI.Control.LoadRecursive() +131
System.Web.UI.Control.LoadRecursive() +131
System.Web.UI.Control.AddedControl(Control control, Int32 index) +318
System.Web.UI.ControlCollection.Add(Control child) +146
System.Web.UI.Control.AddParsedSubObject(Object obj) +38
Microsoft.SharePoint.WebPartPages.WebPart.AddParsedSubObject(Object obj) +879
Microsoft.SharePoint.WebPartPages.DataFormWebPart.CreateChildControls() +1036
System.Web.UI.Control.EnsureChildControls() +87
System.Web.UI.Control.PreRenderRecursiveInternal() +50
System.Web.UI.WebControls.WebParts.WebPart.PreRenderRecursiveInternal() +62
System.Web.UI.Control.PreRenderRecursiveInternal() +170
System.Web.UI.Control.PreRenderRecursiveInternal() +170
System.Web.UI.Control.PreRenderRecursiveInternal() +170
System.Web.UI.Control.PreRenderRecursiveInternal() +170
System.Web.UI.Control.PreRenderRecursiveInternal() +170
System.Web.UI.Page.ProcessRequestMain(Boolean includeStagesBeforeAsyncPoint, Boolean includeStagesAfterAsyncPoint) +2041
Also, when viewing the List Form within SharePoint Designer, the field control does not render and gives the error:
"Failed to render "Description" column because of an error in the "Multiple lines of text" field type control. See details in log. Exception message: the RadControls folder was not found."
Thanks!
Gavin