root element must be resource root found: . resource must be in XRC namespace found namespace: (should be: 'http://www.wxwidgets.org/wxxrc'). invalid version version must be of 'N.N.N.N' format (version specified: ) unknown version version specified: (currently only version until are supported). missing attribute must have a attribute. unknown attribute does not have a attribute. invalid element resource can only contain object and object_ref elements. Unexpected element: . reference to unknown object an object_ref points to an unknown object: unknown class name class unknown class property class does not have a property unknown property child property does not have a child deprecated class class is deprecated, use instead class within class an object of class is not supposed to hold a child object of class