I am trying to port an application that builds and works under windows to Linux. I did not write the application, and aside from making sure it continues to build and run under Linux, I do not maintain it. It happens to use WxWidgets, and the vtables errors seem to be nearly exclusively related to the implimentations of WxWidgets objects, but I am not gathering the problem is special to WxWidgets.. I am getting a plethora of the above errors. I have googled the error, and gather that some required method in xxx's parent is not implimented in xxx's. That is only slightly more helpful than the actual error message which is completely opaque. Is there some easier way besides method by method comparision of the parent and the child to find out what is missing ?