FabioLolix [1] filed a deletion request for mstreamexpress-bin [2]: Pkgbuild maintainer here, there have not been mStream Express binary builds for more then 2 years and half, there have been tenths of release to mstream meanwhile, use 'mstream' pkgbuild which have been created a while ago [1] https://aur.archlinux.org/account/FabioLolix/ [2] https://aur.archlinux.org/pkgbase/mstreamexpress-bin/