I have a program which consists on one line: #include <boost/variant.hpp> If I try to compile this using the main CVS tree, I get the following with borland 5.51 and 5.64 compilers: Error E2401 C:\BoostMainCVS\boost/variant/detail/substitute_fwd.hpp 50: Invalid template argument list Error E2041 C:\BoostMainCVS\boost/variant/detail/substitute_fwd.hpp 50: Incorrect use of default Error E2040 C:\BoostMainCVS\boost/variant/detail/substitute_fwd.hpp 50: Declaration terminated incorrectly Error E2394 C:\BoostMainCVS\boost/variant/detail/substitute.hpp 101: Too few arguments passed to template 'substitute<T,Dest,Source,Arity>' Error E2040 C:\BoostMainCVS\boost/variant/detail/substitute.hpp 101: Declaration terminated incorrectly Error E2228 C:\BoostMainCVS\boost/variant/detail/substitute.hpp 101: Too many error or warning messages What can be done to fix this? Robert Ramey