Both quake3-data and quake3-teamarena ebuilds contain the lines insinto "${GAMES_DATADIR}"/quake3/missionpack doins missionpack/*.pk3 || die "missionpack" This causes emerge to fail if FEATURES=collision-protect is on. Additionally, the teamarena ebuild tries to copy pak1.pak from the cd. This is not necessary, because the file is already there (it's in the patch). I guess, there are CDs out there that don't even have this file. Will post patch.
Created attachment 84835 [details, diff] quake3-teamarena-fix-collisions The patch. No need to rev-bump, because both issues are of the "does not install" case.
Fixed in CVS... thanks for the bug report...