diff --git a/TestBenchFramework/BenchControl/TestMethods/iPerlCommunication/TestMethod.cs b/TestBenchFramework/BenchControl/TestMethods/iPerlCommunication/TestMethod.cs
index 55810018a..80f55d915 100644
--- a/TestBenchFramework/BenchControl/TestMethods/iPerlCommunication/TestMethod.cs
+++ b/TestBenchFramework/BenchControl/TestMethods/iPerlCommunication/TestMethod.cs
@@ -62,22 +62,34 @@ namespace TBF.BenchControl.TestMethods.iPerlCommunication
 			{
 				/// Check whether RFID serial ports are free
 				SerialPort rfidPort;
-				rfidPort = new SerialPort(string.Format("COM{0}", testMethodCfg.RfidPortNrBoard1), 9600, Parity.None, 8, StopBits.One);
-				rfidPort.Open();
-				rfidPort.Close();
+                if (testMethodCfg.RfidPortNrBoard1 != 0)
+                {
+                    rfidPort = new SerialPort(string.Format("COM{0}", testMethodCfg.RfidPortNrBoard1), 9600, Parity.None, 8, StopBits.One);
+                    rfidPort.Open();
+                    rfidPort.Close();
+                }
 
-				rfidPort = new SerialPort(string.Format("COM{0}", testMethodCfg.RfidPortNrBoard2), 9600, Parity.None, 8, StopBits.One);
-				rfidPort.Open();
-				rfidPort.Close();
+                if (testMethodCfg.RfidPortNrBoard2 != 0)
+                {
+				    rfidPort = new SerialPort(string.Format("COM{0}", testMethodCfg.RfidPortNrBoard2), 9600, Parity.None, 8, StopBits.One);
+				    rfidPort.Open();
+				    rfidPort.Close();
+                }
 
-				rfidPort = new SerialPort(string.Format("COM{0}", testMethodCfg.RfidPortNrBoard3), 9600, Parity.None, 8, StopBits.One);
-				rfidPort.Open();
-				rfidPort.Close();
+                if (testMethodCfg.RfidPortNrBoard3 != 0)
+                {
+				    rfidPort = new SerialPort(string.Format("COM{0}", testMethodCfg.RfidPortNrBoard3), 9600, Parity.None, 8, StopBits.One);
+				    rfidPort.Open();
+				    rfidPort.Close();
+                }
 
-				rfidPort = new SerialPort(string.Format("COM{0}", testMethodCfg.RfidPortNrBoard4), 9600, Parity.None, 8, StopBits.One);
-				rfidPort.Open();
-				rfidPort.Close();
-			}
+                if (testMethodCfg.RfidPortNrBoard4 != 0)
+                {
+				    rfidPort = new SerialPort(string.Format("COM{0}", testMethodCfg.RfidPortNrBoard4), 9600, Parity.None, 8, StopBits.One);
+				    rfidPort.Open();
+				    rfidPort.Close();
+                }
+            }
 			
             rfidDataLogger.Fatal("------------------------------------------------------------------------");
             rfidDataLogger.FatalFormat("Test Bench Framework  ver. {0}", Program.Version);
diff --git a/TestBenchFramework/BenchControl/TestMethods/iPerlCommunication/iPerlCommunicationForm.cs b/TestBenchFramework/BenchControl/TestMethods/iPerlCommunication/iPerlCommunicationForm.cs
index 5548a286a..782301926 100644
--- a/TestBenchFramework/BenchControl/TestMethods/iPerlCommunication/iPerlCommunicationForm.cs
+++ b/TestBenchFramework/BenchControl/TestMethods/iPerlCommunication/iPerlCommunicationForm.cs
@@ -6,6 +6,7 @@ using System.Collections.Generic;
 using System.Drawing;
 using System.Globalization;
 using System.Runtime.InteropServices;
+using System.Text;
 using System.Threading;
 using System.Windows.Forms;
 using log4net;
@@ -438,13 +439,15 @@ namespace TBF.BenchControl.TestMethods.iPerlCommunication
 			waterMeters = new List<WaterMeters.iPerl.WaterMeter>();
 			foreach (var rr in ProcessData.RegisterReaders)
 			{
-				WaterMeters.iPerl.WaterMeter iPerl = rr as WaterMeters.iPerl.WaterMeter;
-				if (iPerl != null) waterMeters.Add(iPerl);
+                if (rr is WaterMeters.iPerl.WaterMeter)
+                {
+                    waterMeters.Add(rr as WaterMeters.iPerl.WaterMeter);
+                }
 			}
 
 			WaterMetersCount = waterMeters.Count;
 
-			ShuffleTextBoxes(this.WaterMetersCount, Config.Data.LineSize);
+			ShuffleTextBoxes(WaterMetersCount, Config.Data.LineSize);
 
 			///
 			/// Prepare worker threads, 'rfidPortNrs', 'lastGroup', etc..
@@ -473,6 +476,12 @@ namespace TBF.BenchControl.TestMethods.iPerlCommunication
 
 				if (iPerl.Group > lastGroup) lastGroup = iPerl.Group;
 			}
+
+            StringBuilder sb = new StringBuilder();
+            sb.Append("rfidPortNrs = {");
+            foreach (var v in rfidPortNrs) sb.Append(string.Format(" {0}", v));
+            sb.Append(string.Format(" }, nrThreads = {0}", workerThreads.Count));
+            log.WarnFormat(sb.ToString());
 		}
 
 		/// <summary>
diff --git a/TestBenchFramework/Properties/AssemblyInfo.cs b/TestBenchFramework/Properties/AssemblyInfo.cs
index d09ca0f39..d79ca8680 100644
--- a/TestBenchFramework/Properties/AssemblyInfo.cs
+++ b/TestBenchFramework/Properties/AssemblyInfo.cs
@@ -29,5 +29,5 @@ using System.Runtime.InteropServices;
 //      Build Number
 //      Revision
 //
-[assembly: AssemblyVersion("2.5.267.1")]
-[assembly: AssemblyFileVersion("2.5.267.1")]
+[assembly: AssemblyVersion("2.5.268.1")]
+[assembly: AssemblyFileVersion("2.5.268.1")]