--- trunk/mage/usr/lib/mage/meta-generator.sh	2013/12/06 09:08:31	2287
+++ trunk/mage/usr/lib/mage/meta-generator.sh	2013/12/06 09:27:53	2288
@@ -91,6 +91,8 @@
 done
 
 SMAGEFILE="$1"
+[ -z ${SMAGEFILE} ] && die "No smage file given."
+[ -e ${SMAGEFILE} ] || die "Smage file '${SMAGEFILE}' does not exist."
 
 if [[ -n ${PKGTARBALL} ]]
 then