I have made a test build for 1.56 and would appreciate help in finding problems with it. boost.1.56.0.tar.gz: https://dl.dropboxusercontent.com/u/11048326/boost/boost-1.56.0a1c1.tar.gz boost.1.56.0.zip: https://dl.dropboxusercontent.com/u/11048326/boost/boost-1.56.0a1c1.zip The tar.gz file builds w/o errors on my Mac. The zip version contains windows line endings. I’m looking for: * missing files/libraries * files/folders that don’t belong in the release * files/folders in the wrong places * build failures * Anything else that is wrong. One thing I’ve noticed is that these are *significantly* larger than the 1.55.0 archives. A bunch of that is because the Boost.Ublas documentation has exploded in size - but there are probably other reasons as well. Looking forward to feedback… — Marshall