Fix as suggested by @jam

install.sh

@@ -99,7 +99,7 @@ function extract_install () {
     rm -rf ./usr
     tar -xf $2
     echo "Installing $1 (this may take a while)..."
-    tar cf - ./usr/*
+    tar cf - ./usr/* | (cd /; tar xp --keep-directory-symlink -f -)
     mv ./dlist $CREW_CONFIG_PATH/meta/$1.directorylist
     mv ./filelist $CREW_CONFIG_PATH/meta/$1.filelist
 }