diff --git a/lighthub/candriver.cpp b/lighthub/candriver.cpp
index e27163c..6411dcd 100644
--- a/lighthub/candriver.cpp
+++ b/lighthub/candriver.cpp
@@ -570,7 +570,7 @@ return 0;
 aJsonObject * canDriver::getConfbyID(uint8_t devId)
 {
 if (!canConfigObj) return NULL;
-if (!canRemoteConfigObj) return NULL;
+if (!canRemoteConfigObj || canRemoteConfigObj->type != aJson_Object) return NULL;
 aJsonObject * remoteConfObj=canRemoteConfigObj->child; 
 while (remoteConfObj)
     {  
@@ -587,7 +587,7 @@ return NULL;
 
 aJsonObject * canDriver::findConfbyName(char* devName, int * devAddr)
 {
-if (!canRemoteConfigObj && !devName) return NULL;
+if (!canRemoteConfigObj || canRemoteConfigObj->type != aJson_Object || !devName ) return NULL;
 aJsonObject * remoteConfObj=canRemoteConfigObj->child; 
 while (remoteConfObj)
     {  
@@ -616,7 +616,7 @@ extern PubSubClient mqttClient;
 bool canDriver::subscribeTopics(char * root, size_t buflen)
 {
  if (!root) return false;   
- if (!canRemoteConfigObj) return false;
+ if (!canRemoteConfigObj || canRemoteConfigObj->type != aJson_Object) return false;
 
  int rootLen = strlen(root);     
 
diff --git a/lighthub/item.cpp b/lighthub/item.cpp
index 1d082bc..7e27a3e 100644
--- a/lighthub/item.cpp
+++ b/lighthub/item.cpp
@@ -341,13 +341,13 @@ uint16_t getCanNum(aJsonObject* verb)
       case aJson_Array: 
         {
         aJsonObject *canNumObj=aJson.getArrayItem(verb,1);  
-        if (canNumObj->type == aJson_Int) return canNumObj->valueint;
+        if (canNumObj && canNumObj->type == aJson_Int) return canNumObj->valueint;
         return 0;   
         }
       case aJson_Object:  
         {
         aJsonObject *canNumObj=aJson.getObjectItem(verb, "can");  
-        if (canNumObj->type == aJson_Int) return canNumObj->valueint;
+        if (canNumObj && canNumObj->type == aJson_Int) return canNumObj->valueint;
         return 0;   
         }    
    }          
diff --git a/lighthub/main.cpp b/lighthub/main.cpp
index c76fa00..8dabe23 100644
--- a/lighthub/main.cpp
+++ b/lighthub/main.cpp
@@ -2717,6 +2717,18 @@ infoSerial<<F("\n(+)CAN");
 #else
 infoSerial<<F("\n(-)CAN");
 #endif
+
+#ifdef PULSEPIN12
+infoSerial<<F("\n(+)PULSE on PIN12");
+#else
+infoSerial<<F("\n(-)PULSE on PIN12");
+#endif
+
+#ifdef CRYPT
+infoSerial<<F("\n(+)CRYPT");
+#else
+infoSerial<<F("\n(-)CRYPT");
+#endif
 //#ifdef IPMODBUS
 //infoSerial<<F("\n(+)IPMODBUS");
 //#endif