This is the second callstack of where the same child element tries to reparent the view. However we assert because this was already set in the first callstack. > Game_PcDx11_x64_Debug.exe!Noesis::Visual::OnConnectToView(Noesis::IView * view) Line 660 C++ Game_PcDx11_x64_Debug.exe!Noesis::UIElement::OnConnectToView(Noesis::IView * view) Line 2309 C++ Game_PcDx11_x64_Debug.exe!Noesis::FrameworkElement::OnConnectToView(Noesis::IView * view) Line 1955 C++ Game_PcDx11_x64_Debug.exe!Noesis::Visual::ConnectToView(Noesis::IView * view) Line 191 C++ Game_PcDx11_x64_Debug.exe!Noesis::Visual::OnConnectToViewChildren() Line 718 C++ Game_PcDx11_x64_Debug.exe!Noesis::FrameworkElement::OnConnectToViewChildren() Line 1993 C++ Game_PcDx11_x64_Debug.exe!Noesis::Visual::ConnectToView(Noesis::IView * view) Line 192 C++