diff --git a/Domain/Collector/MessagesCollector.py b/Domain/Collector/MessagesCollector.py
index 976c6e84..46a33f62 100644
--- a/Domain/Collector/MessagesCollector.py
+++ b/Domain/Collector/MessagesCollector.py
@@ -51,21 +51,19 @@ def extTransition(self, *args):
 		"""
 		
 		for port in self.IPorts:
-			msg = self.peek(port, *args)
-			np = self.getPortId(port)
-
 			### adapted with PyPDEVS
-#			if hasattr(self, 'peek'):
-#				msg = self.peek(port)
-#				np = port.myID
-#			else:
-#				inputs = args[0]
-#				msg = inputs.get(port)
-#				np=port.port_id
+			if hasattr(self, 'peek'):
+				msg = self.peek(port)
+				np = port.myID
+			else:
+				inputs = args[0]
+				msg = inputs.get(port)
+				np=port.port_id
 
 			if msg:
 				### filename
 				fn = "%s%d%s"%(self.fileName, np, self.ext)
+				
 				with open(fn,'a') as f: f.write("%s\n"%(str(msg)))
 				del msg
 
diff --git a/Domain/Collector/To_Disk.py b/Domain/Collector/To_Disk.py
index 538cdac1..b29c87d5 100644
--- a/Domain/Collector/To_Disk.py
+++ b/Domain/Collector/To_Disk.py
@@ -24,7 +24,7 @@ class To_Disk(QuickScope):
 	"""
 
 	###
-	def __init__(self, fileName = os.path.join(os.getcwd(),"result%d"%random.randint(1,100)), eventAxis = False, comma = " ", ext = '.dat'):
+	def __init__(self, fileName = os.path.join(os.getcwd(),"result%d"%random.randint(1,100)), eventAxis = False, comma = " ", ext = '.dat', col = 0):
 		""" Constructor.
 
 			@param fileName : Name of output fileName
@@ -39,6 +39,7 @@ def __init__(self, fileName = os.path.join(os.getcwd(),"result%d"%random.randint
 		self.fileName = fileName
 		self.comma = comma
 		self.ext = ext
+		self.col = col
 
 		#decimal precision
 		getcontext().prec = 6
@@ -69,14 +70,12 @@ def extTransition(self, *args):
 		#	self.pos = self.pos[0:n]
 
 		for np in range(n):
-			msg = self.peek(self.IPorts[np], *args)
-			
-#			### adapted with PyPDEVS
-#			if hasattr(self, 'peek'):
-#				msg = self.peek(self.IPorts[np])
-#			else:
-#				inputs = args[0]
-#				msg = inputs.get(self.IPorts[np])
+			### adapted with PyPDEVS
+			if hasattr(self, 'peek'):
+				msg = self.peek(self.IPorts[np])
+			else:
+				inputs = args[0]
+				msg = inputs.get(self.IPorts[np])
 
 			### filename
 			fn = "%s%d%s"%(self.fileName, np, self.ext)
@@ -100,17 +99,16 @@ def extTransition(self, *args):
 					if fn not in self.last_time_value:
 						self.last_time_value.update({fn:1})
 
-					t = Decimal(str(float(self.getMsgTime(msg))))
-
-#					### adapted with PyPDEVS
-#					if hasattr(self, 'peek'):
-#						t = Decimal(str(float(msg.time)))
-#					else:
-#						t = Decimal(str(float(msg[-1][0])))
+					### adapted with PyPDEVS
+					if hasattr(self, 'peek'):
+						t = Decimal(str(float(msg.time)))
+					else:
+						t = Decimal(str(float(msg[-1][0])))
 				
 				### adapted with PyPDEVS
 				
-				val = self.getMsgValue(msg)
+				val = msg.value[self.col] if hasattr(self, 'peek') else msg[0][self.col]
+				
 				if isinstance(val, int) or isinstance(val, float):
 					v = Decimal(str(float(val)))
 				else:
@@ -123,6 +121,21 @@ def extTransition(self, *args):
 				
 				self.buffer[fn] = v
 				
+				### run only with python 2.6
+				#with open(fn, 'a') as f:
+
+				#	if t == self.last_time_value[fn]:
+				#		if self.pos[np] == -1:
+				#			self.pos[np] = 0
+				#		f.seek(self.pos[np], os.SEEK_SET)
+				#		f.truncate(self.pos[np])
+
+				#	else:
+				#		self.pos[np] = f.tell()						
+				#		self.last_time_value[fn] = t
+
+				#	f.write("%s%s%s\n"%(t,self.comma,v))
+					
 				del msg
 
 		self.state["sigma"] = 0
diff --git a/devsimpy.py b/devsimpy.py
index 52328351..ddeb8b6c 100644
--- a/devsimpy.py
+++ b/devsimpy.py
@@ -171,6 +171,9 @@
 # Sets the homepath variable to the directory where your application is located (sys.argv[0]).
 builtins.__dict__.update(builtin_dict)
 
+### Deprecation warnings with Python 3.8
+wx._core.WindowIDRef.__index__ = wx._core.WindowIDRef.__int__
+
 ### import Container much faster loading than from Container import ... for os windows only
 import Container
 import Menu
@@ -220,7 +223,7 @@ def DefineScreenSize(percentscreen = None, size = None):
 	elif percentscreen:
 		x1, x2, l, h = wx.Display().GetClientArea()
 		l, h = percentscreen * l, percentscreen * h
-	return l, h
+	return round(l), round(h)
 
 # -------------------------------------------------------------------
 class MainApplication(wx.Frame):