diff --git a/src/utils/plot_mesh_tally.py b/src/utils/plot_mesh_tally.py
old mode 100644
new mode 100755
index 625304105e..a759f7187c
--- a/src/utils/plot_mesh_tally.py
+++ b/src/utils/plot_mesh_tally.py
@@ -1,7 +1,7 @@
-'''Python script to plot tally data generated by OpenMC.'''
-
 #!/usr/bin/env python
 
+'''Python script to plot tally data generated by OpenMC.'''
+
 import sys
 from statepoint import *
 
@@ -122,7 +122,7 @@ class AppForm(QMainWindow):
         filename = QFileDialog.getOpenFileName(self, 'Select statepoint file', '.')
 
         # Create StatePoint object and read in data
-        self.datafile = StatePoint(filename)
+        self.datafile = StatePoint(str(filename))
         self.datafile.read_results()
         self.datafile.generate_stdev()
 
@@ -153,13 +153,13 @@ class AppForm(QMainWindow):
             for s in tally.scores:
                 self.score_types.append(s)
             self.tally_scores.append(self.score_types)
-        print 'self.tally_scores = ', self.tally_scores
+#        print 'self.tally_scores = ', self.tally_scores
 
     def on_draw(self):
         """ Redraws the figure
         """
 
-        print 'Calling on_draw...'
+#        print 'Calling on_draw...'
         # Get selected basis, axial_level and stage
         basis = self.basis.currentIndex() + 1
         axial_level = self.axial_level.currentIndex() + 1
@@ -190,7 +190,7 @@ class AppForm(QMainWindow):
                 for j in range(self.nz):
                     matrix[i,j] = self.datafile.get_value(self.tally.currentIndex(), spec_list + [('mesh', (i, axial_level, j))], self.scoreBox.currentIndex())[0]
 
-        print spec_list
+#        print spec_list
 
         # Clear the figure
         self.fig.clear()
@@ -210,7 +210,7 @@ class AppForm(QMainWindow):
     def _update(self):
         '''Updates widget to display new relevant comboboxes and figure data
         '''
-        print 'Calling _update...'
+#        print 'Calling _update...'
 
         self.mesh = self.datafile.meshes[self.datafile.tallies[self.tally.currentIndex()].filters['mesh'].bins[0] - 1]
 
@@ -229,7 +229,7 @@ class AppForm(QMainWindow):
 
         # Determine maximum value from current tally data set
         self.maxvalue = self.datafile.tallies[self.tally.currentIndex()].results.max()
-        print self.maxvalue
+#        print self.maxvalue
 
         # Clear and hide old filter labels
         for item in self.labelList:
@@ -243,7 +243,7 @@ class AppForm(QMainWindow):
         self.update()
 
     def populate_boxes(self):
-        print 'Calling populate_boxes...'
+#        print 'Calling populate_boxes...'
 
         n = 4
         labels = {'cell': 'Cell : ',
@@ -266,11 +266,11 @@ class AppForm(QMainWindow):
             self.grid.addWidget(combobox, n, 1)
             n += 1
 
-            print element
+#            print element
             if element in ['cell', 'cellborn', 'surface', 'material', 'universe']:
                 combobox.addItems([str(i) for i in nextFilter.bins])
-                for i in nextFilter.bins:
-                    print i
+#                for i in nextFilter.bins:
+#                    print i
 
             elif element == 'energyin' or element == 'energyout':
                 for i in range(nextFilter.length):