Explode if can't clone the app

abra

@@ -435,7 +435,10 @@ sub_app_new (){
     # FIXME 3wc: move to require_app_clone or something
     warning "'$APP' not found, fetching via git.."
 
-    git clone "$GIT_URL/$APP.git" "$ABRA_DIR/apps/$APP"
+    if ! git clone "$GIT_URL/$APP.git" "$ABRA_DIR/apps/$APP"; then
+      error "Could not retrieve '$APP', this app doesn't exist?"
+    fi
+
   fi
 
   if [ -z "$DOMAIN" ]; then