diff --git a/src/MqttProcessor.py b/src/MqttProcessor.py
index 2b27bd2..7e9bbaf 100644
--- a/src/MqttProcessor.py
+++ b/src/MqttProcessor.py
@@ -34,7 +34,7 @@ class MqttProcessor(threading.Thread, AbstractNotificationReceiver):
     def __processUpdatedRegisters(self, force=False):
         self.logger.debug("MqttProcessor.__updateSubscriptions")
 
-        subscribeTopics = [ r.subscribeTopic for r in self.registers if r.subscribeTopic]
+        subscribeTopics = [ r.subscribeTopic for r in self.registers if hasattr(r,'subscribeTopic') and r.subscribeTopic]
         self.logger.debug("Topics: {0!s}".format(subscribeTopics))
 
         for subscribeTopic in subscribeTopics:
@@ -49,7 +49,7 @@ class MqttProcessor(threading.Thread, AbstractNotificationReceiver):
                 self.client.unsubscribe(subscription)
                 self.subscriptions.remove(subscription)
 
-        self.topicRegisterMap = { r.subscribeTopic: r for r in self.registers if r.subscribeTopic }
+        self.topicRegisterMap = { r.subscribeTopic: r for r in self.registers if hasattr(r,'subscribeTopic') and r.subscribeTopic }
 
     def receiveNotification(self, arg):
         self.logger.info("MqttProcessor:registersChanged")
diff --git a/src/registers.pkl b/src/registers.pkl
index af220a5..4e159cb 100644
Binary files a/src/registers.pkl and b/src/registers.pkl differ
diff --git a/src/updateRegisterFile.py b/src/updateRegisterFile.py
index 8ad9eef..2c4b7e8 100644
--- a/src/updateRegisterFile.py
+++ b/src/updateRegisterFile.py
@@ -13,7 +13,8 @@ newDatapoints = []
 for dp in datapoints:
     ndp = type(dp)()
     for k,v in dp.__dict__.items():
-        ndp.__dict__[k] = v
+        if k != 'logger':
+            ndp.__dict__[k] = v
     newDatapoints.append(ndp)
 
 RegisterDatapoint.checkRegisterList(newDatapoints, reset=True)