diff --git a/dstat_interface/interface/save.py b/dstat_interface/interface/save.py
old mode 100644
new mode 100755
index b6c521d72a0abf632a41c99830ec2ed48053ed25..b260b87404c1da036c99d344e049d85f79dc6503
--- a/dstat_interface/interface/save.py
+++ b/dstat_interface/interface/save.py
@@ -18,7 +18,10 @@
 #     You should have received a copy of the GNU General Public License
 #     along with this program.  If not, see <http://www.gnu.org/licenses/>.
 
-import gtk, io, os
+import io
+import os
+
+import gtk
 import numpy as np
 
 from errors import InputError, VarError, ErrorLogger
diff --git a/dstat_interface/main.py b/dstat_interface/main.py
index 1acbbf2bba4716f0593bc44be08ef4b49e87ce1b..a71bede88de7b949eff6ad4b85240bcd1e4efee1 100755
--- a/dstat_interface/main.py
+++ b/dstat_interface/main.py
@@ -159,6 +159,9 @@ class Main(object):
                         self.plot_notebook.page_num(self.ft_window)).hide()
         self.plot_notebook.get_nth_page(
                         self.plot_notebook.page_num(self.period_window)).hide()
+                        
+        self.params_loaded = False
+                        
 
     def on_window1_destroy(self, object, data=None):
         """ Quit when main window closed."""
@@ -208,13 +211,15 @@ class Main(object):
             self.statusbar.remove_all(self.error_context_id)
             
             if not len(self.version) == 2:
-                self.statusbar.push(self.error_context_id, "Communication Error")
+                self.statusbar.push(self.error_context_id,
+                    "Communication Error")
                 return
             
             else:
                 self.adc_pot.set_version(self.version)
                 self.statusbar.push(self.error_context_id,
-                                    "".join(["DStat version: ", str(self.version[0]),
+                                    "".join(["DStat version: ",
+                                    str(self.version[0]),
                                     ".", str(self.version[1])])
                                 )
                                 
@@ -433,7 +438,6 @@ class Main(object):
         while comm.serial_instance.data_pipe_p.poll(): # Clear data pipe
             comm.serial_instance.data_pipe_p.recv()
         
-        
         selection = self.expcombobox.get_active()
         parameters = {}
         parameters['version'] = self.version