[Solved] TrreView in UserControl..2nd Node Expanded weird Error

[Neal]

This is a bit odd.

Vers. Q4 2006
I have a tree view in a usercontrol (a FileFolder Explorer)

Loads fine,..shows dir structure etc.

If I expand a node,..all fine....but
When I expand a node in those just opened,..I get  this Error:
(which is weird,..cos,...I do use 

,

IPostBackEventHandler

and

public void RaisePostBackEvent(string eventArgument)

{

if (eventArgument != null)

{

}

}

Any suggestions , help please 
The Holding page, does do the whole load and reload usercontrol tracking...still that could be responsible, but other user controls in the holding page (Dynamically loaded and ajaxified dynamically) work fine.

TIA
Neal

[NullReferenceException: Object reference not set to an instance of an object.]
   Telerik.WebControls.RadTreeView.System.Web.UI.IPostBackEventHandler.RaisePostBackEvent(String s) +414

[Neal]

So,.. me being dumb,...forgot to uncomment my Ctl Reload to the Holding form