diff --git a/README b/README
index 8a3cafb..8fb2bf8 100644
--- a/README
+++ b/README
@@ -9,6 +9,7 @@ Prerequisites:
 	-paramiko and scp (optional for using SendTFilesToServer)
 	-stuffr (optional for using jroIO_hf)
 	-PyQt4 (for using GUI)
+	-pyfits (Fits data)
 
 Signal Chain Installation:
 
diff --git a/schainpy/VERSION b/schainpy/VERSION
index 269abe4..f015b5a 100644
--- a/schainpy/VERSION
+++ b/schainpy/VERSION
@@ -12,4 +12,8 @@ VERSIONS:
 					 Bug fixed selecting heights by block (selecting profiles instead heights)
 -jroproc_voltage.py: New feature added: decoding data by block using FFT.
 -jroIO_heispectra.py: Bug fixed in FitsReader. Using local Fits object instead schainpy.mode.data.jrodata.Fits object.
--jroIO_heispectra.py: Channel index list does not exist.
\ No newline at end of file
+-jroIO_heispectra.py: Channel index list does not exist.
+
+2.1.3.1:
+-GUI: every icon were resized
+-jroproc_voltage.py: Print a message when "Read from code" option is selected and the code is not defined inside data file
diff --git a/schainpy/__init__.py b/schainpy/__init__.py
index a4fd748..2ff5957 100644
--- a/schainpy/__init__.py
+++ b/schainpy/__init__.py
@@ -4,4 +4,4 @@ Created on Feb 7, 2012
 @author $Author$
 @version $Id$
 '''
-__version__ = "2.1.3"
\ No newline at end of file
+__version__ = "2.1.3.1"
\ No newline at end of file
diff --git a/schainpy/model/graphics/mpldriver.py b/schainpy/model/graphics/mpldriver.py
index bbd55d9..afded75 100644
--- a/schainpy/model/graphics/mpldriver.py
+++ b/schainpy/model/graphics/mpldriver.py
@@ -7,7 +7,7 @@ if 'linux' in sys.platform:
     matplotlib.use("TKAgg")
     
 if 'darwin' in sys.platform:
-    matplotlib.use("WXAgg")
+    matplotlib.use('GTKAgg')
 #Qt4Agg', 'GTK', 'GTKAgg', 'ps', 'agg', 'cairo', 'MacOSX', 'GTKCairo', 'WXAgg', 'template', 'TkAgg', 'GTK3Cairo', 'GTK3Agg', 'svg', 'WebAgg', 'CocoaAgg', 'emf', 'gdk', 'WX'
 import matplotlib.pyplot
 
diff --git a/schainpy/model/proc/jroproc_voltage.py b/schainpy/model/proc/jroproc_voltage.py
index 9ef780d..76413af 100644
--- a/schainpy/model/proc/jroproc_voltage.py
+++ b/schainpy/model/proc/jroproc_voltage.py
@@ -647,12 +647,18 @@ class Decoder(Operation):
     
     def run(self, dataOut, code=None, nCode=None, nBaud=None, mode = 0, osamp=None, times=None):
         
+        dataOut.flagNoData = True
+        
         if dataOut.flagDecodeData:
             print "This data is already decoded, recoding again ..."
         
         if not self.isConfig:
             
             if code is None:
+                if not dataOut.code:
+                    print "Code is not defined"
+                    raise ValueError, "Code could not be read from %s object. Enter a value in Code parameter" %dataOut.type
+                
                 code = dataOut.code
             else:
                 code = numpy.array(code).reshape(nCode,nBaud)
@@ -707,6 +713,8 @@ class Decoder(Operation):
         
         self.__profIndex += 1
         
+        dataOut.flagNoData = False
+        
         return 1
 #        dataOut.flagDeflipData = True #asumo q la data no esta sin flip
 
diff --git a/schainpy/model/setup.py b/schainpy/model/setup.py
deleted file mode 100644
index f680492..0000000
--- a/schainpy/model/setup.py
+++ /dev/null
@@ -1,6 +0,0 @@
-from distutils.core import setup
-from distutils.extension import Extension
-from Cython.Distutils import build_ext
-setup(
-    cmdclass = {'build_ext': build_ext},
-    ext_modules = [Extension("cfunctions", ["cfunctions.pyx"])] )
\ No newline at end of file
diff --git a/setup.py b/setup.py
index f7f1285..7065dcc 100644
--- a/setup.py
+++ b/setup.py
@@ -27,11 +27,11 @@ setup(name="schainpy",
                     'schainpy.gui.viewer.windows'},
         py_modules=['schainpy.serializer.DataTranslate',
                     'schainpy.serializer.JROSerializer'],
-        package_data={'schainpy.gui.figures': ['*.jpg', '*.jpeg', '*.png', '*.gif']},
+        package_data={'schainpy.gui.figures': ['*.png']},
         include_package_data=True,
         scripts =['schainpy/gui/schainGUI'],
         install_requires=["numpy >= 1.6.0",
-                          "scipy >= 0.11.0",
+                          "scipy >= 0.9.0",
                           "h5py >= 2.0.1",
                           "matplotlib >= 1.0.0"
                           ],