Hi, with VC 7.0, with both boost_1_30 and the current CVS, and with both release and debug mode, #include <boost/graph/adjacency_list.hpp> #include <boost/spirit/core.hpp> gives an Internal Compiler Error 1001 at line 52 of h:\jmj\C++\Include\boost_1_30_0\boost\mpl\aux_\preprocessed\msvc70\apply.hpp while the error disappears when changing the order of the include files. I can live with the workaround of course, but maybe someone in charge of mpl would like to go after this. Regards, Julius