Here's another valgrind error that I think might be related to the crashes I have been seeing. The gdb stack trace showed that a_Imgbuf_new() was calling a layout method with an invalid address for the layout object. The valgrind error shows a_Imgbuf_new() reading invalid memory when it calls Widget::getLayout(). It looks to me as though a_Imgbuf_new() is being passed an Image that has already been freed. Regards, Jeremy Henty