Hi. The precompiled apply_wrap.hpp fails when included in xx.cpp file.. The Microsoft compiler fails due to internal compiler error.. Is there nothing to do to get further with this problem? C:\Boost\include\boost-1_33_1\boost\mpl\aux_\preprocessed\plain\apply_wrap.h pp(38) : fatal error C1001: INTERNAL COMPILER ERROR (compiler file 'f:\vs70builds\6030\vc\Compiler\CxxFE\sl\P1\C\main.c', li Best Regards: Tomi