Hi all, i ve downloaded the time_series.zip by the link: http://boost-consulting.com/vault/index.php?directory=Math%20-%20Numerics and unzip it on my computer. But the compilation of the example (time_series\time_series\main.cpp) program fails due to the errors: c:\boost\time_series\boost\sequence\size.hpp(27) : error C2143: syntax error : missing ';' before '<' 1> c:\boost\time_series\boost\sequence\size.hpp(33) : see reference to class template instantiation 'boost::sequence::impl::size<S,T>' being compiled 1>c:\boost\time_series\boost\sequence\size.hpp(27) : error C4430: missing type specifier - int assumed. Note: C++ does not support default-int 1>c:\boost\time_series\boost\sequence\size.hpp(27) : error C2238: unexpected token(s) preceding ';' 1>c:\boost\time_series\boost\sequence\size.hpp(29) : error C2143: syntax error : missing ';' before '(' 1>c:\boost\time_series\boost\sequence\size.hpp(29) : error C4430: missing type specifier - int assumed. Note: C++ does not support default-int 1>c:\boost\time_series\boost\sequence\size.hpp(30) : error C4430: missing type specifier - int assumed. Note: C++ does not support default-int After looking at the file boost\time_series\boost\sequence\size.hpp i see that the variable name range_size in line 27 is unknown. So my question is which file should i include? I ve searched for the variable name range_size in the time_series folder. And one possibility is the file boost\detail\range_concepts.hpp. But is this the right file? Thanks, Kim Tang