I am getting these linking errors and can't figure out where it comes from.

4>libboost_regex-vc80-mt-gd-1_34_1.lib(instances.obj) : error LNK2005: "public: virtual char const * __thiscall std::runtime_error::what(void)const " (?what@runtime_error@std@@UBEPBDXZ) already defined in Curve.obj

I am using Visual Studio 2005 SP1 and Windows XP

Lars