Update msg_encX.py

msg_encX.py

@@ -24,7 +24,7 @@ def seedx(path , User_passcode=User_passcode0, N_days=N_days0, encryption_diffic
   except:
     old_day_index = 0
     print('no old index was found')
-  os.environ['old_day_index'] = old_day_index
+  os.environ['old_day_index'] = str(old_day_index)
   timestamp = datetime.timestamp(datetime.now())
   #total number of days since unix time
   days_span = timestamp/math.factorial(6)/120 + 0.1#*random.random() #first time calculate the days since unix, thae latter randomize the time zone by up to ~7 hours