When compiling with Mipspro 7.3 using the command line bjam -a "-sTOOLS=mipspro" "-sBUILD=debug release" I get the following errors: ...found 441 targets... ...updating 95 targets... MkDir1 libs/regex/build/bin/libboost_regex.a/mipspro MkDir1 libs/regex/build/bin/libboost_regex.a/mipspro/debug MkDir1 libs/regex/build/bin/libboost_regex.a/mipspro/debug/runtime-link-dynamic mipspro-C++-action libs/regex/build/bin/libboost_regex.a/mipspro/debug/runtime-link-dynamic /c_regex_traits.o mipspro-C++-action libs/regex/build/bin/libboost_regex.a/mipspro/debug/runtime-link-dynamic /c_regex_traits_common.o mipspro-C++-action libs/regex/build/bin/libboost_regex.a/mipspro/debug/runtime-link-dynamic /cpp_regex_traits.o mipspro-C++-action libs/regex/build/bin/libboost_regex.a/mipspro/debug/runtime-link-dynamic /cregex.o cc-1474 CC: ERROR File = /core/elements/cots/boost-1.28.0/boost/regex/detail/instances.hpp, Line = 104 No instance of overloaded function "boost::reg_expression<char, boost::regex_traits<char>, std::allocator<char>>::reg_expression" matches the specified type. template reg_expression<BOOST_REGEX_CHAR_T>::reg_expression<BOOST_REGEX_CHAR_T>(c onst BOOST_DEFAULT_ALLOCATOR(BOOST_REGEX_CHAR_T)&); ^ cc-1474 CC: ERROR File = /core/elements/cots/boost-1.28.0/boost/regex/detail/instances.hpp, Line = 105 No instance of overloaded function "boost::reg_expression<char, boost::regex_traits<char>, std::allocator<char>>::reg_expression" matches the specified type. template reg_expression<BOOST_REGEX_CHAR_T>::reg_expression<BOOST_REGEX_CHAR_T>(c onst BOOST_REGEX_CHAR_T* p, reg_expression<BOOST_REGEX_CHAR_T>::flag_type f, const BOOST_DEFAULT_ALLOCATOR(BOOST_REGEX_CHAR_T)& a); ^ Any ideas? Thank you, Virginia [Non-text portions of this message have been removed]