Index: sources/canbus/messagebuilder.cpp
===================================================================
diff -u -r1ec7b44e6d1d66460d2da943ff65f3c0c0755d8f -rd3edfbd78f021082f37c7ee79a5a31a57b2808d4
--- sources/canbus/messagebuilder.cpp	(.../messagebuilder.cpp)	(revision 1ec7b44e6d1d66460d2da943ff65f3c0c0755d8f)
+++ sources/canbus/messagebuilder.cpp	(.../messagebuilder.cpp)	(revision d3edfbd78f021082f37c7ee79a5a31a57b2808d4)
@@ -225,9 +225,13 @@
     quint8 mExpected = 0;
     quint8 mBeenRead = 0;
     if ( ! checkCRC(crcData, mExpected, mBeenRead ) ) {  // CRC is always next byte after Data
-        LOG_ERROR(tr("CRC error, expected %1 but got %2")
-                    .arg(Format::toHexString(mExpected, true, eLenCRCDigits))
-                    .arg(Format::toHexString(mBeenRead, true, eLenCRCDigits)));
+        static quint64 erCRC = 0;
+        LOG_ERROR(tr("%1 - CRC error, expected %2 but got %3 : %4")
+                  .arg(++erCRC)
+                  .arg(Format::toHexString(mExpected, true, eLenCRCDigits))
+                  .arg(Format::toHexString(mBeenRead, true, eLenCRCDigits))
+                  .arg(Format::toHexString(vMessage.data))
+                  );
         return false;
     }
     return true;