If I handle a RadTreeNode in this way:
The second Exception is thrown.
The workaround is in the comment, if you call m_myNode2.TreeViewElement or m_myNode2.Nodes before, everything works fine,
anything that causes internally a call to "TreeViewElement" or "FindTreeView" (i digged a bit in the source code).
So this happens only on Nodes, without Childnodes and not for Rootnodes.
It's more a Bug-Report than a Question, but don't know where to Post ist.
If the TreeView Property is the first Property called, on a RadTreeNode, it always has the value null.