Commit 929cf9d

@@ -229,10 +229,15 @@ func buildBluePrint(useBlueprint bool) (string, error) {
 	splits := strings.Split(input, ",")
 	for _, split := range splits {
 		split = strings.TrimSpace(split)
+		if split == "" {
+			continue
+		}
 		if _, err := strconv.Atoi(split); err != nil {
 			return "", err
-		} else {
+		} else if blueprint != "" {
 			blueprint = blueprint + "-" + split
+		} else {
+			blueprint = split
 		}
 	}
 	return blueprint, nil