id summary reporter owner description type status milestone component version severity resolution keywords cc 8713 Downloadable binaries at 1.50.0-x64 on sourceforge are actually 32bit Bernhard Loos René Rivera At least the libboost_system-vc90-mt-gd-1_50.lib and libboost_filesystem-vc90-mt-gd-1_50.lib at http://sourceforge.net/projects/boost/files/boost-binaries/1.50.0-x64/ are actually 32bit binaries instead of 64bit as the name suggests. Bugs closed To Be Determined website Boost 1.50.0 Problem fixed download