[Boost-users] Unrecoverable block scoping error

I use boost iterators and BGL in my project, which I normally compile with gcc. However, I wanted to try how portable it is, and tried to compile it with MSVC++ 6. After having sorted out a few minor quirks in my code, I get the error message "c:\program files\hack\microsoft visual studio\local\include\boost\type_traits\broken_compiler_spec.hpp(23) : fatal error C1506: unrecoverable block scoping error" Where could this stem from? I installed boost for VC++ from within Cygwin with the command line bjam "--prefix=c:\program files\hack\microsoft visual studio\local" "-sTOOLS=msvc" "--builddir=../boost_msvc_build" "-sMSVC_ROOT=c:\program files\hack\microsoft visual studio\vc98" install Any ideas? / martin