diff --git a/script/device/Image.py b/script/device/Image.py
index 4b16d81..b3772f5 100644
--- a/script/device/Image.py
+++ b/script/device/Image.py
@@ -79,20 +79,28 @@ class Image(DeviceBase, Readable):
         tmp_file = self.pixel.image_root_folder + "tmp/spec_image_info.dat"        
         copyfile(filename, tmp_file)
 
-        ret = img_get_int(tmp_file, threshold1, threshold2, threshold3, threshold4, \
+        try:
+            ret = img_get_int(tmp_file, threshold1, threshold2, threshold3, threshold4, \
                           self.pixel.IMAGE_HEADER_LENGTH, self.pixel.PIX_XDIM, self.pixel.PIX_YDIM,self.pixel.PIX_COLOR_DEPTH, \
                           self.roi[0], self.roi[1], self.roi[2], self.roi[3], self.broi[0], self.broi[1], self.broi[2], self.broi[3])
-                                                    
+        except:
+            log("Error calculating intensity: " + str(filename) + " - " + str(sys.argv[1]), False)
+            ret = None                                                
         self.setCache(ret, None)
         return ret
 
     def get_image(self, filename = None):
         if filename is None:
             filename = self.pixel.get_image_filename()
-        if str(filename) == str(self.last_filename):
+        filename = str(filename)
+        if filename == self.last_filename:
             return self.last_image
         print "Reading image : " + filename 
-        ret = img_read(filename, self.pixel.IMAGE_HEADER_LENGTH, self.pixel.PIX_XDIM, self.pixel.PIX_YDIM,self.pixel.PIX_COLOR_DEPTH)          
+        try:
+            ret = img_read(filename, self.pixel.IMAGE_HEADER_LENGTH, self.pixel.PIX_XDIM, self.pixel.PIX_YDIM,self.pixel.PIX_COLOR_DEPTH)          
+        except:
+            log("Error reading data file: " + str(filename) + " - " + str(sys.argv[1]), False)
+            return None
         ret = Convert.reshape(ret, self.pixel.PIX_YDIM, self.pixel.PIX_XDIM)              
         self.last_filename = filename
         self.last_image = ret