diff --git a/Domain/Collector/MessagesCollector.py b/Domain/Collector/MessagesCollector.py
index c333e79e..1d83223c 100644
--- a/Domain/Collector/MessagesCollector.py
+++ b/Domain/Collector/MessagesCollector.py
@@ -1,11 +1,11 @@
 # -*- coding: utf-8 -*-
 
 """
-Name : MessagesCollector.py 
-Brief descritpion : collect to disk received messages 
-Author(s) : Laurent CAPOCCHI (capocchi@univ-corse.fr)
-Version :  1.0                                        
-Last modified : 7/10/11
+Name: MessagesCollector.py 
+Brief descritpion: collect to disk received messages 
+Author(s): Laurent CAPOCCHI (capocchi@univ-corse.fr)
+Version: 1.0                                        
+Last modified: 26/10/20
 GENERAL NOTES AND REMARKS:
 GLOBAL VARIABLES AND FUNCTIONS:
 """
@@ -34,7 +34,7 @@ def __init__(self, fileName = None, ext = '.dat', comma = ""):
 		DomainBehavior.__init__(self)
 		
 		### a way to overcome the random initialization of the fileNam attr directly in the param list of the constructor!
-		fileName = fileName if fileName is not None else os.path.join(os.getcwd(),"result%d"%random.randint(1,100))
+		fileName = fileName if fileName is not None else os.path.join(os.getcwd(),"out","result%d"%random.randint(1,100))
 		
 		# local copy
 		self.fileName = fileName
diff --git a/PropertiesGridCtrl.py b/PropertiesGridCtrl.py
index 8e14e595..24f6cd5f 100644
--- a/PropertiesGridCtrl.py
+++ b/PropertiesGridCtrl.py
@@ -449,13 +449,14 @@ def Populate(self, model):
 				elif isinstance(val, (tuple,dict)) and len(val_in_constructor) != 0:
 					if len(val_in_constructor) != len(val):
 						val = val_in_constructor
-				### if filename attr exist in the model and if it is None by default, this means that the attr is randomly initialized
+				### if filename attr exist in the model and if it is 'result' by default, this means that the attr is randomly initialized
 				### into the constructor of the model (its the case for MessageCollector...). So, we get the random path from a devs instance and
 				### insert it into the prop field
-				elif attr_name.lower() == 'filename' and val is None:
+				elif attr_name.lower() == 'filename' and val == 'result':
 					cls = Components.GetClass(model.python_path)
 					devs = cls()
 					val = getattr(devs,attr_name)
+					model.args[attr_name] = val
 				else:
 					pass
 			else:
diff --git a/SpreadSheet.py b/SpreadSheet.py
index c430ff5a..cb85be78 100644
--- a/SpreadSheet.py
+++ b/SpreadSheet.py
@@ -87,8 +87,11 @@ def Populate(self, data):
 			Publisher.sendMessage("isfull", msg=self._full_flag)
 		except pubsub.pub.SenderMissingReqdMsgDataError as info:
 			pass
-		
-		self.AutoSize()
+
+		try:
+			self.AutoSize()
+		except Exception as info:
+			pass
 		
 	###
 	def IsFull(self):
@@ -410,35 +413,38 @@ def OnGraph(self, event):
 			else:
 				s = "value = %s; time = %s"%(v,sheet.GetCellValue(i,0))
 
-			### globals containt the time and value variables after exec of the statement
-			exec(str(s), globals())
-
-			### if value is a list, we must choose an index to plot amoung the values of the list
-			if isinstance(value, list):
-				if select == -1:
-					dlg = wx.TextEntryDialog(self, _('Choose one index between [%d-%d] to plot into the list of values.')%(0,len(value)-1),_('Plotting Manager'), value="0")
-					if dlg.ShowModal() == wx.ID_OK:
-						select=int(dlg.GetValue())
-						dlg.Destroy()
+			try:
+				### globals containt the time and value variables after exec of the statement
+				exec(str(s), globals())
+			except Exception as info:
+				sys.stdout.write(info)
+			else:
+				### if value is a list, we must choose an index to plot amoung the values of the list
+				if isinstance(value, list):
+					if select == -1:
+						dlg = wx.TextEntryDialog(self, _('Choose one index between [%d-%d] to plot into the list of values.')%(0,len(value)-1),_('Plotting Manager'), value="0")
+						if dlg.ShowModal() == wx.ID_OK:
+							select=int(dlg.GetValue())
+							dlg.Destroy()
+						else:
+							dlg.Destroy()
+							break
+
+					### choice is digit else we break
+					if select in range(0,len(value)-1) and not isinstance(value[select], str):
+						data.append((time, float(value[select])))
 					else:
-						dlg.Destroy()
+						wx.MessageBox(_('Value to plot must be digit!'), _('Warning'), wx.OK | wx.ICON_WARNING)
 						break
 
-				### choice is digit else we break
-				if select in range(0,len(value)-1) and not isinstance(value[select], str):
-					data.append((time, float(value[select])))
+				### first if int is digit or if float is digit
 				else:
-					wx.MessageBox(_('Value to plot must be digit!'), _('Warning'), wx.OK | wx.ICON_WARNING)
-					break
-
-			### first if int is digit or if float is digit
-			else:
-				v = str(format(value,'f')).lstrip('-')
-				if v.isdigit() or v.replace(".", "", 1).isdigit():
-					data.append((time,float(value)))
-				else:
-					wx.MessageBox(_('Type of data should be float or int : %s')%str(value), _('Info'))
-					break
+					v = str(format(value,'f')).lstrip('-')
+					if v.isdigit() or v.replace(".", "", 1).isdigit():
+						data.append((time,float(value)))
+					else:
+						wx.MessageBox(_('Type of data should be float or int : %s')%str(value), _('Info'))
+						break
 					
 		if data:
 			frame = StaticPlot(self, wx.NewIdRef(), title, data)