wxXmlNode *parentNode = m_node->GetParent();
wxCHECK_MSG(m_parentSizer != NULL ||
- (parentNode->GetType() == wxXML_ELEMENT_NODE &&
+ (parentNode && parentNode->GetType() == wxXML_ELEMENT_NODE &&
m_parentAsWindow != NULL &&
(m_parentAsWindow->IsKindOf(CLASSINFO(wxPanel)) ||
m_parentAsWindow->IsKindOf(CLASSINFO(wxFrame)) ||