I updated sigc++ to 2.2.2 today and committed a few changes to the local gtkmm/glibmm for gcc 4.3 compatibility. If anyone updates svn and gets errors similar to these: http://rafb.net/p/4HDjdn22.html delete the entire libs/sigc++2 directory from your local copy and do an svn update again: rm -rf libs/sigc++2 Then all should be well. Doug