Hello, I am new to the list and I already have an issue. LOL. I downloaded the latest BOOST because I need regex to support UNICODE (so I do have UNICODE and _UNICODE in the project settings) and release build is OK but in debug I have the errors LIBCMTD.lib(_wctype.obj) : error LNK2005: _iswalpha already defined in libboost_regex-vc6-mt-sgd-1_32.lib(c_regex_traits.obj) LIBCMTD.lib(_wctype.obj) : error LNK2005: _iswupper already defined in libboost_regex-vc6-mt-sgd-1_32.lib(c_regex_traits.obj) LIBCMTD.lib(_wctype.obj) : error LNK2005: _iswlower already defined in libboost_regex-vc6-mt-sgd-1_32.lib(c_regex_traits.obj) LIBCMTD.lib(_wctype.obj) : error LNK2005: _iswdigit already defined in libboost_regex-vc6-mt-sgd-1_32.lib(c_regex_traits.obj) LIBCMTD.lib(_wctype.obj) : error LNK2005: _iswxdigit already defined in libboost_regex-vc6-mt-sgd-1_32.lib(c_regex_traits.obj) LIBCMTD.lib(_wctype.obj) : error LNK2005: _iswspace already defined in libboost_regex-vc6-mt-sgd-1_32.lib(c_regex_traits.obj) LIBCMTD.lib(_wctype.obj) : error LNK2005: _iswpunct already defined in libboost_regex-vc6-mt-sgd-1_32.lib(c_regex_traits.obj) LIBCMTD.lib(_wctype.obj) : error LNK2005: _iswcntrl already defined in libboost_regex-vc6-mt-sgd-1_32.lib(c_regex_traits.obj) I found the workaraund at http://aspn.activestate.com/ASPN/Mail/Message/2509074 but it doesn't work for me Could some one please help me on this.... MSVC6.0 SP6, Window XP with the latest MS SDK. Thanks in advance, Alex. Thank you again, Alex. mailto:alexbalaev@yahoo.com ____________________________________________________ Yahoo! Sports Rekindle the Rivalries. Sign up for Fantasy Football http://football.fantasysports.yahoo.com