(Quote from Sensenmann01)u dont use 1.5beta mod manager u need to use 1.31 version when you dwnload crossfire mod says only use version 1.31 and i have never had issues with activating the mod look for version 1.31 then go from there is really simple Author SWAT_OP-R 8 R Oct 14 2015 1.31 is required as it the last version which reliably handle the required installation scripts and that is the version you need to use no wonder you have issues just follow what has been said