I'm attempting to build a quite large app on Solaris (which I know next to nothing about), and I'm getting compilation errors in a couple of boost files, seemingly related to stlport. The error message "exception is not a member of stlp_std" is issued for line 29 of archive_exception.hpp: class archive_exception : public virtual std::exception The same message (plus others which I think are spurious) is issued for line 55 of throw_exception.hpp: inline void throw_exception_assert_compatibility( std::exception const & ) { } All this code compiles okay with gcc on Linux and with cl on Windows, so I think it is specifically a Sun issue. A Google search led to some discussions on the boost site, but I could not determine from them what the fix is. The Sun compiler I'm using is version 5.9.0, and the boost version is 1.39.0. Any help on this will be greatly appreciated. Roger House Software Developer