I just did a search of my craft directory. I think this "MSG_NOSIGNAL" might be a part of Boost. Just an idea, it might help to install/reinstall something related to boost first: cd ~/AstroRoot/craft-root/ ; source ~/AstroRoot/craft-root/craft/craftenv.sh; craft -vi boost-headers craft -vi indiserver Not sure if boost-headers is what you need, but just a thought. I could ask Jasem or someone else, they might know.Read More...