Index: TreatmentLog/loader.py
===================================================================
diff -u -r05edab0c07f66b4d8ed5358f1b329a8ac48cfb5d -rfc43fc2ed484aec6f49ef1c7f67a71c4d0d5d0d3
--- TreatmentLog/loader.py	(.../loader.py)	(revision 05edab0c07f66b4d8ed5358f1b329a8ac48cfb5d)
+++ TreatmentLog/loader.py	(.../loader.py)	(revision fc43fc2ed484aec6f49ef1c7f67a71c4d0d5d0d3)
@@ -14,7 +14,8 @@
 from engine.dynamicloader   import DynamicLoader
 
 # plugin specific
-from leahi_dialin.common.msg_defs import MsgIds, MsgFieldPositions
+from leahi_dialin.common.msg_ids    import MsgIds
+from leahi_dialin.common.constants  import MSG_HEADER_SIZE
 from leahi_dialin.protocols       import CAN
 from leahi_dialin.utils           import conversions