diff --git a/config.go b/config.go
index 192d60d..1a1651c 100644
--- a/config.go
+++ b/config.go
@@ -12,68 +12,81 @@ import (
 	"google.golang.org/protobuf/encoding/prototext"
 )
 
-func WriteConfig(d *Droplets, h *Hypervisors, e *Events) {
-	d.WriteConfigJSON()
-	d.WriteConfigTEXT()
+func WriteConfig(d *Droplets, h *Hypervisors, e *Events) bool {
+	if !d.WriteConfigJSON() {
+		return false
+	}
+	if !d.WriteConfigTEXT() {
+		return false
+	}
 
-	e.WriteConfigJSON()
-	e.WriteConfigTEXT()
+	if e.WriteConfigJSON() {
+		return false
+	}
+	if e.WriteConfigTEXT() {
+		return false
+	}
+	return true
 }
 
 // export as json
-func (e *Events) WriteConfigJSON() {
+func (e *Events) WriteConfigJSON() bool {
 	fullname := filepath.Join(os.Getenv("VIRTIGO_HOME"), "events.json")
 	cfgfile, err := os.OpenFile(fullname, os.O_RDWR|os.O_CREATE, 0666)
 	defer cfgfile.Close()
 	if err != nil {
 		fmt.Println("open config file :", err)
-		return
+		return false
 	}
 	text := e.FormatJSON()
 	fmt.Fprintln(cfgfile, text)
 	fmt.Println("Write:", fullname, "OK")
+	return true
 }
 
 // export as prototext
-func (e *Events) WriteConfigTEXT() {
+func (e *Events) WriteConfigTEXT() bool {
 	fullname := filepath.Join(os.Getenv("VIRTIGO_HOME"), "events.text")
 	cfgfile, err := os.OpenFile(fullname, os.O_RDWR|os.O_CREATE, 0666)
 	defer cfgfile.Close()
 	if err != nil {
 		fmt.Println("open config file :", err)
-		return
+		return false
 	}
 	text := e.FormatTEXT()
 	fmt.Fprintln(cfgfile, text)
 	fmt.Println("Write:", fullname, "OK")
+	return true
 }
 
 // export as json
-func (d *Droplets) WriteConfigJSON() {
+func (d *Droplets) WriteConfigJSON() bool {
 	fullname := filepath.Join(os.Getenv("VIRTIGO_HOME"), "droplets.json")
 	cfgfile, err := os.OpenFile(fullname, os.O_RDWR|os.O_CREATE, 0666)
 	defer cfgfile.Close()
 	if err != nil {
 		fmt.Println("open config file :", err)
-		return
+		return false
 	}
 	text := d.FormatJSON()
 	fmt.Fprintln(cfgfile, text)
 	fmt.Println("Write:", fullname, "OK")
+	return true
 }
 
 // export as prototext
-func (d *Droplets) WriteConfigTEXT() {
+func (d *Droplets) WriteConfigTEXT() bool {
 	fullname := filepath.Join(os.Getenv("VIRTIGO_HOME"), "droplets.text")
 	cfgfile, err := os.OpenFile(fullname, os.O_RDWR|os.O_CREATE, 0666)
 	defer cfgfile.Close()
 	if err != nil {
 		fmt.Println("open config file :", err)
-		return
+		return false
 	}
 	text := d.FormatTEXT()
 	fmt.Fprintln(cfgfile, text)
 	fmt.Println("Write:", fullname, "OK")
+	return true
 }
 
 // human readable JSON
diff --git a/droplet.proto b/droplet.proto
index 87af716..e34a65e 100644
--- a/droplet.proto
+++ b/droplet.proto
@@ -29,7 +29,7 @@ message Droplet {
         string image_url        = 15;           // url to the image
 
         // is it possible to have custom formatting in JSON and TEXT marshal/unmarshal ?
-        JunkInfo humantest   = 16;
+        // JunkInfo humantest   = 16;
 }
 
 enum DropletState {