diff --git a/README b/README
index 99bbc49..8a3cafb 100644
--- a/README
+++ b/README
@@ -1,12 +1,20 @@
 Prerequisites:
 
 	-numpy 1.8.0
-	-
+	-scipy
+	-math
+	-matplotlib
+	-h5py
+	-ftplib
+	-paramiko and scp (optional for using SendTFilesToServer)
+	-stuffr (optional for using jroIO_hf)
+	-PyQt4 (for using GUI)
 
 Signal Chain Installation:
 
 	1. Install numpy, matplotlib, TKAgg
-	2. Install digital_rf_hdf5 module (developed by Haystack Observatory) if you will use USRP data
+	2. Install digital_rf_hdf5 module (developed by Haystack Observatory)
+	   if you want to use USRP data
 	3. untar schainpy-x.x.x.tar.gz
 	4. cd schainpy-x.x.x
 	5. execute:
diff --git a/schainpy/__init__.py b/schainpy/__init__.py
index afa4d9a..16b360d 100644
--- a/schainpy/__init__.py
+++ b/schainpy/__init__.py
@@ -4,3 +4,4 @@ Created on Feb 7, 2012
 @author $Author$
 @version $Id$
 '''
+__version__ = "2.1.5.1"
\ No newline at end of file
diff --git a/schainpy/gui/viewcontroller/basicwindow.py b/schainpy/gui/viewcontroller/basicwindow.py
index 8028268..b9d02cf 100644
--- a/schainpy/gui/viewcontroller/basicwindow.py
+++ b/schainpy/gui/viewcontroller/basicwindow.py
@@ -165,7 +165,13 @@ class BasicWindow(QMainWindow, Ui_BasicWindow):
         """
         """
         self.stopProject()
-            
+    
+    @pyqtSignature("")   
+    def on_actionAbout_triggered(self):
+        """
+        """
+        self.aboutEvent()
+              
     @pyqtSignature("")     
     def on_actionFTP_triggered(self):
         """
@@ -5683,36 +5689,3 @@ class ShowMeConsole(QtCore.QObject):
         textWritten = QtCore.pyqtSignal(str)
         def write (self, text):
             self.textWritten.emit(str(text))
-
-class PlotManager():
-    def __init__(self, queue):
-        self.queue = queue
-        self.objPlotDict = {}
-
-    def processIncoming(self):
-        while self.queue.qsize():
-            try:
-                dataFromQueue = self.queue.get(True)
-                if dataFromQueue == None:
-                    continue
-                 
-                dataPlot = dataFromQueue['data']
-                kwargs = dataFromQueue['kwargs']                 
-                id = kwargs['id']
-                if 'channelList' in kwargs.keys():
-                    channelList = kwargs['channelList']
-                else:
-                    channelList = None
-                plotname = kwargs.pop('type')
-
-                if not(id in self.objPlotDict.keys()):
-                    className = eval(plotname)
-                    self.objPlotDict[id] = className(id, channelList, dataPlot)
-                    self.objPlotDict[id].show()
-                      
-                self.objPlotDict[id].run(dataPlot , **kwargs)
-   
-            except Queue.Empty:
-                pass
-            
-            
diff --git a/schainpy/gui/viewer/ui_initwindow.py b/schainpy/gui/viewer/ui_initwindow.py
index b0fb671..d6bc947 100644
--- a/schainpy/gui/viewer/ui_initwindow.py
+++ b/schainpy/gui/viewer/ui_initwindow.py
@@ -16,8 +16,9 @@ except AttributeError:
 
 import os
 from schainpy.gui.figures import tools
+from schainpy import  __version__
 
-INITIAL_MSG = "Signal Chain GUI - v2.1.5"
+INITIAL_MSG = "Signal Chain GUI - v%s" %__version__
 FIGURES_PATH = tools.get_path()
 
 class Ui_InitWindow(object):
diff --git a/schainpy/gui/viewer/ui_mainwindow.py b/schainpy/gui/viewer/ui_mainwindow.py
index c322a2e..507560a 100644
--- a/schainpy/gui/viewer/ui_mainwindow.py
+++ b/schainpy/gui/viewer/ui_mainwindow.py
@@ -26,6 +26,7 @@ except AttributeError:
 
 import os
 from schainpy.gui.figures import tools
+from schainpy import __version__
 
 FIGURES_PATH = tools.get_path()
 
@@ -58,6 +59,8 @@ class Ui_EnvWindow(object):
          
     def setupUi(self, MainWindow):
         
+        self.paused=False
+        
         MainWindow.setObjectName(_fromUtf8("MainWindow"))
         MainWindow.resize(1200, 800)
         
@@ -156,6 +159,7 @@ class Ui_EnvWindow(object):
         self.actionStop.setObjectName(_fromUtf8("actionStop"))
         self.actionAbout = QtGui.QAction(MainWindow)
         self.actionAbout.setObjectName(_fromUtf8("actionAbout"))
+        
         self.actionOpenToolbar = QtGui.QAction(MainWindow)
         self.actionOpenToolbar.setIcon(iconOpen)
         self.actionOpenToolbar.setObjectName(_fromUtf8("actionOpenToolbar"))
@@ -195,7 +199,6 @@ class Ui_EnvWindow(object):
         self.toolBar.addAction(self.actionStopToolbar)
         self.toolBar.addSeparator()
         
-        self.paused=False
         self.actionPause.triggered.connect(self.changePauseIcon)
         self.actionPauseToolbar.triggered.connect(self.changePauseIcon)
         
@@ -235,7 +238,7 @@ class Ui_EnvWindow(object):
         self.actionStart.setText(_translate("MainWindow", "Start", None))
         self.actionPause.setText(_translate("MainWindow", "Pause", None))
         self.actionStop.setText(_translate("MainWindow", "Stop", None))
-        self.actionAbout.setText(_translate("MainWindow", "About", None))
+        self.actionAbout.setText(_translate("MainWindow", "About SChain", None))
         self.actionOpenToolbar.setText(_translate("MainWindow", "openToolbar", None))
         self.actionOpenToolbar.setToolTip(_translate("MainWindow", "Open a project", None))
         self.actionCreateToolbar.setText(_translate("MainWindow", "createToolbar", None))
@@ -260,6 +263,14 @@ class Ui_EnvWindow(object):
             event.accept()
         else:
             event.ignore()
+    
+    def aboutEvent(self):
+        
+        reply = QtGui.QMessageBox.information(self,
+                                              'About',
+            "Signal Chain Processing Software v%s" %__version__,
+            "Developed by Jicamarca Radio Observatory\nComments to miguel.urco@jro.igp.gob.pe")
+        
             
 class Ui_BasicWindow(Ui_EnvWindow, Ui_ProjectTab, Ui_VoltageTab, Ui_SpectraTab, Ui_SpectraHeisTab, Ui_CorrelationTab):
     
diff --git a/setup.py b/setup.py
index bea2de3..7d28584 100644
--- a/setup.py
+++ b/setup.py
@@ -5,9 +5,10 @@ Created on Jul 16, 2014
 '''
 
 from distutils.core import setup, Extension
+from schainpy import __version__
 
 setup(name="schainpy",
-        version="2.1.5",
+        version=__version__,
         description="Python tools to read, write and process Jicamarca data",
         author="Miguel Urco",
         author_email="miguel.urco@jro.igp.gob.pe",