Hello, the MD5SUM for http://mirrors.ctan.org/systems/texlive/Source/texlive-20180414-source.tar.xz in texlive.SlackBuild should be corrected to 41d1e8874d266935c656fe51b440a413 instead of d7d5fa10e6d16efa76e5111f7a8eb580. Best regards, Alexander