diff --git a/docs/meshtastic/test.html b/docs/meshtastic/test.html
index 7d1f08a..ce9a9c1 100644
--- a/docs/meshtastic/test.html
+++ b/docs/meshtastic/test.html
@@ -59,7 +59,8 @@ def onReceive(packet, interface):
 
         if p.decoded.portnum == "TEXT_MESSAGE_APP":
             # We only care a about clear text packets
-            receivedPackets.append(p)
+            if receivedPackets != None:
+                receivedPackets.append(p)
 
 
 def onNode(node):
@@ -271,7 +272,8 @@ def testSimulator():
 
         if p.decoded.portnum == "TEXT_MESSAGE_APP":
             # We only care a about clear text packets
-            receivedPackets.append(p)</code></pre>
+            if receivedPackets != None:
+                receivedPackets.append(p)</code></pre>
 </details>
 </dd>
 <dt id="meshtastic.test.openDebugLog"><code class="name flex">
diff --git a/docs/meshtastic/util.html b/docs/meshtastic/util.html
index 40235ad..fcf689c 100644
--- a/docs/meshtastic/util.html
+++ b/docs/meshtastic/util.html
@@ -27,7 +27,7 @@
 <span>Expand source code</span>
 </summary>
 <pre><code class="python">from collections import defaultdict
-import serial
+import serial, traceback
 import serial.tools.list_ports
 from queue import Queue
 import threading, sys, time, logging
@@ -113,7 +113,8 @@ class DeferredExecution():
                 o()
             except:
                 logging.error(
-                    f&#34;Unexpected error in deferred execution {sys.exc_info()[0]}&#34;)</code></pre>
+                    f&#34;Unexpected error in deferred execution {sys.exc_info()[0]}&#34;)
+                print(traceback.format_exc())</code></pre>
 </details>
 </section>
 <section>
@@ -226,7 +227,8 @@ class DeferredExecution():
                 o()
             except:
                 logging.error(
-                    f&#34;Unexpected error in deferred execution {sys.exc_info()[0]}&#34;)</code></pre>
+                    f&#34;Unexpected error in deferred execution {sys.exc_info()[0]}&#34;)
+                print(traceback.format_exc())</code></pre>
 </details>
 <h3>Methods</h3>
 <dl>
diff --git a/meshtastic/test.py b/meshtastic/test.py
index 2a0c662..28d6ed4 100644
--- a/meshtastic/test.py
+++ b/meshtastic/test.py
@@ -31,7 +31,8 @@ def onReceive(packet, interface):
 
         if p.decoded.portnum == "TEXT_MESSAGE_APP":
             # We only care a about clear text packets
-            receivedPackets.append(p)
+            if receivedPackets != None:
+                receivedPackets.append(p)
 
 
 def onNode(node):
diff --git a/meshtastic/util.py b/meshtastic/util.py
index 1ad43b1..4f27d30 100644
--- a/meshtastic/util.py
+++ b/meshtastic/util.py
@@ -1,6 +1,6 @@
 
 from collections import defaultdict
-import serial
+import serial, traceback
 import serial.tools.list_ports
 from queue import Queue
 import threading, sys, time, logging
@@ -87,3 +87,4 @@ class DeferredExecution():
             except:
                 logging.error(
                     f"Unexpected error in deferred execution {sys.exc_info()[0]}")
+                print(traceback.format_exc())
diff --git a/setup.py b/setup.py
index f1110a8..b5ec913 100644
--- a/setup.py
+++ b/setup.py
@@ -12,7 +12,7 @@ with open("README.md", "r") as fh:
 # This call to setup() does all the work
 setup(
     name="meshtastic",
-    version="1.2.30",
+    version="1.2.31",
     description="Python API & client shell for talking to Meshtastic devices",
     long_description=long_description,
     long_description_content_type="text/markdown",