diff --git a/DAS/configuration.py b/DAS/configuration.py
index c840366..2ff9d68 100644
--- a/DAS/configuration.py
+++ b/DAS/configuration.py
@@ -1,6 +1,6 @@
 #!/bin/python3
 
-import configparser
+import configparser, logging, sys
 
 class Configuration:
     """This class stores all the configuration parameters for the given run."""
@@ -11,39 +11,75 @@ class Configuration:
         config = configparser.RawConfigParser()
         config.read(fileName)
 
-        self.nvStart = int(config.get("Simulation Space", "numberValidatorStart"))
-        self.nvStop = int(config.get("Simulation Space", "numberValidatorStop"))
-        self.nvStep = int(config.get("Simulation Space", "numberValidatorStep"))
+        try:
+            self.nvStart = int(config.get("Simulation Space", "numberValidatorStart"))
+            self.nvStop = int(config.get("Simulation Space", "numberValidatorStop"))
+            self.nvStep = int(config.get("Simulation Space", "numberValidatorStep"))
 
-        self.blockSizeStart = int(config.get("Simulation Space", "blockSizeStart"))
-        self.blockSizeStop = int(config.get("Simulation Space", "blockSizeStop"))
-        self.blockSizeStep = int(config.get("Simulation Space", "blockSizeStep"))
+            self.blockSizeStart = int(config.get("Simulation Space", "blockSizeStart"))
+            self.blockSizeStop = int(config.get("Simulation Space", "blockSizeStop"))
+            self.blockSizeStep = int(config.get("Simulation Space", "blockSizeStep"))
 
-        self.netDegreeStart = int(config.get("Simulation Space", "netDegreeStart"))
-        self.netDegreeStop = int(config.get("Simulation Space", "netDegreeStop"))
-        self.netDegreeStep = int(config.get("Simulation Space", "netDegreeStep"))
+            self.netDegreeStart = int(config.get("Simulation Space", "netDegreeStart"))
+            self.netDegreeStop = int(config.get("Simulation Space", "netDegreeStop"))
+            self.netDegreeStep = int(config.get("Simulation Space", "netDegreeStep"))
 
-        self.failureRateStart = int(config.get("Simulation Space", "failureRateStart"))
-        self.failureRateStop = int(config.get("Simulation Space", "failureRateStop"))
-        self.failureRateStep = int(config.get("Simulation Space", "failureRateStep"))
+            self.failureRateStart = int(config.get("Simulation Space", "failureRateStart"))
+            self.failureRateStop = int(config.get("Simulation Space", "failureRateStop"))
+            self.failureRateStep = int(config.get("Simulation Space", "failureRateStep"))
 
-        self.chiStart = int(config.get("Simulation Space", "chiStart"))
-        self.chiStop = int(config.get("Simulation Space", "chiStop"))
-        self.chiStep = int(config.get("Simulation Space", "chiStep"))
+            self.chiStart = int(config.get("Simulation Space", "chiStart"))
+            self.chiStop = int(config.get("Simulation Space", "chiStop"))
+            self.chiStep = int(config.get("Simulation Space", "chiStep"))
+        except:
+            sys.exit("Configuration Error: It seems some of the [Simulation Space] parameters are missing. Cannot continue :( ")
 
-        self.numberRuns = int(config.get("Advanced", "numberRuns"))
-        self.deterministic = config.get("Advanced", "deterministic")
-        self.dumpXML = config.get("Advanced", "dumpXML")
 
-        if self.nvStop < (self.blockSizeStart*4):
-            print("ERROR: The number of validators cannot be lower than the block size * 4")
-            exit(1)
-        if self.chiStart < 1:
-            print("Chi has to be greater than 0")
-            exit(1)
+
+        try:
+            self.numberRuns = int(config.get("Advanced", "numberRuns"))
+            self.deterministic = config.get("Advanced", "deterministic")
+            self.dumpXML = config.get("Advanced", "dumpXML")
+            self.logLevel = config.get("Advanced", "logLevel")
+            self.visualization = config.get("Advanced", "visualization")
+        except:
+            sys.exit("Configuration Error: It seems some of the [Advanced] parameters are missing. Cannot continue :( ")
+        self.test()
+
+    def test(self):
+
+        print("Testing configuration...")
+        if self.logLevel == "INFO":
+            self.logLevel = logging.INFO
+        elif self.logLevel == "DEBUG":
+            self.logLevel = logging.DEBUG
+        else:
+            self.logLevel = logging.INFO
+
+        if self.nvStart >= self.nvStop:
+            sys.exit("Configuration Error: numberValidatorStart has to be smaller than numberValidatorStop")
+
+        if self.failureRateStart >= self.failureRateStop:
+            sys.exit("Configuration Error: failureRateStart has to be smaller than failureRateStop")
+
+        if self.blockSizeStart >= self.blockSizeStop:
+            sys.exit("Configuration Error: blockSizeStart has to be smaller than blockSizeStop")
+
+        if self.netDegreeStart >= self.netDegreeStop:
+            sys.exit("Configuration Error: netDegreeStart has to be smaller than netDegreeStop")
+
+        if self.chiStart >= self.chiStop:
+            sys.exit("Configuration Error: chiStart has to be smaller than chiStop")
+
+
+        if self.nvStart < self.blockSizeStop:
+            sys.exit("Configuration Error: numberValidatorStart hast to be larger than blockSizeStop.")
+
+        if self.chiStart < 2:
+            sys.exit("Configuration Error: Chi has to be greater than 1.")
+
         if self.chiStop > self.blockSizeStart:
-            print("Chi (%d) has to be smaller or equal to block the size (%d)" % (self.chiStop, self.blockSizeStart))
-            exit(1)
+            sys.exit("Configuration Error: Chi (%d) has to be smaller or equal to block the size (%d)" % (self.chiStop, self.blockSizeStart))
 
 
 
diff --git a/DAS/simulator.py b/DAS/simulator.py
index 267fa82..b0902d9 100644
--- a/DAS/simulator.py
+++ b/DAS/simulator.py
@@ -11,14 +11,14 @@ from DAS.validator import *
 class Simulator:
     """This class implements the main DAS simulator."""
 
-    def __init__(self, shape):
+    def __init__(self, shape, config):
         """It initializes the simulation with a set of parameters (shape)."""
         self.shape = shape
         self.format = {"entity": "Simulator"}
         self.result = Result(self.shape)
         self.validators = []
         self.logger = []
-        self.logLevel = logging.INFO
+        self.logLevel = config.logLevel
         self.proposerID = 0
         self.glob = []
 
diff --git a/config.ini b/config.ini
index 052f754..12bd749 100644
--- a/config.ini
+++ b/config.ini
@@ -14,7 +14,7 @@ blockSizeStep  = 16
 
 netDegreeStart = 6
 netDegreeStop  = 8
-netDegreeStep  = 1
+netDegreeStep  = 2
 
 chiStart = 4
 chiStop  = 8
@@ -26,3 +26,5 @@ chiStep  = 2
 deterministic = 0
 numberRuns = 2
 dumpXML = 1
+visualization = 1
+logLevel = INFO
diff --git a/study.py b/study.py
index 25e8735..0df9365 100644
--- a/study.py
+++ b/study.py
@@ -11,7 +11,7 @@ def study():
 
     config = Configuration(sys.argv[1])
     shape = Shape(0, 0, 0, 0, 0, 0)
-    sim = Simulator(shape)
+    sim = Simulator(shape, config)
     sim.initLogger()
     results = []
     simCnt = 0