the name of the flavour needs to be ubuntu-headless, not just headless

debian/changelog

@@ -1,3 +1,9 @@
+livecd-rootfs (1.162) UNRELEASED; urgency=low
+
+  * the name of the flavour needs to be ubuntu-headless, not just headless
+
+ -- Oliver Grawert <ogra@ubuntu.com>  Wed, 09 Mar 2011 16:46:28 +0100
+
 livecd-rootfs (1.161) natty; urgency=low
 
   * add ubuntu-headless as allowed flavour to BuildLiveCD

livecd.sh

@@ -203,9 +203,9 @@ esac; done;
 shift $((OPTIND-1))
 
 if (( $# == 0 )) || [ "X$1" = "Xall" ]; then
-    set -- ubuntu kubuntu kubuntu-mobile kubuntu-netbook edubuntu xubuntu mythbuntu gobuntu base headless
+    set -- ubuntu kubuntu kubuntu-mobile kubuntu-netbook edubuntu xubuntu mythbuntu gobuntu base ubuntu-headless
     if [ "$ARCH" = "i386" ]; then
-        set -- ubuntu ubuntu-dvd kubuntu kubuntu-dvd kubuntu-mobile kubuntu-netbook edubuntu edubuntu-dvd mythbuntu xubuntu gobuntu base headless
+        set -- ubuntu ubuntu-dvd kubuntu kubuntu-dvd kubuntu-mobile kubuntu-netbook edubuntu edubuntu-dvd mythbuntu xubuntu gobuntu base ubuntu-headless
     fi
 fi
 
@@ -217,7 +217,7 @@ fi
 
 for arg in "$@"; do
     case "$arg" in
-       ubuntu|ubuntu-dvd|ubuntu-lpia|edubuntu|edubuntu-dvd|kubuntu|kubuntu-dvd|kubuntu-mobile|kubuntu-netbook|xubuntu|mythbuntu|gobuntu|ubuntu-mid|ubuntu-netbook|ubuntu-moblin-remix|base|headless|tocd)
+       ubuntu|ubuntu-dvd|ubuntu-lpia|edubuntu|edubuntu-dvd|kubuntu|kubuntu-dvd|kubuntu-mobile|kubuntu-netbook|xubuntu|mythbuntu|gobuntu|ubuntu-mid|ubuntu-netbook|ubuntu-moblin-remix|base|ubuntu-headless|tocd)
 	    ;;
 	*)
 	    echo bad name >&2;
@@ -318,7 +318,7 @@ Flags: seen
 	    LIST="$LIST minimal^ standard^"
 	    LIVELIST="$LIVE_BOOT_SCRIPTS"
 	    ;;
-	headless)
+	ubuntu-headless)
 	    LIST="$LIST minimal^ standard^"
 	    LIVELIST="$LIVE_BOOT_SCRIPTS"
 	    ;;