Ogre Engine compiling

Hi! I just downloaded the OGRE engine and tries to compile it. I already have sucessfully compiles the STLport libraries. But I get this strange error message when compiling the ogre engine. OgreDynLib.cpp d:\stlport2\stlport\stl\_pair.h(57) : error C2953: ''pair'' : Template class already defined d:\stlport2\stlport\stl\_pair.h(57) : See Declaration of ''pair'' ... Does anybody had the same problem? Thanks! The Wild Wild West - Desperado!