diff --git a/TBF/BenchControl/Sequences/MainSeq.cs b/TBF/BenchControl/Sequences/MainSeq.cs
index 94ef3100d..41cc0b870 100644
--- a/TBF/BenchControl/Sequences/MainSeq.cs
+++ b/TBF/BenchControl/Sequences/MainSeq.cs
@@ -978,14 +978,22 @@ namespace TBF.BenchControl.Sequences
                         }
 
                         StateMachine.LoadTestParams(test);
-						ProcessData.RegisterReaders = sensPath.RegisterReaders;
-						foreach (var rr in sensPath.RegisterReaders)
-						{
-							if ((rr is TestMethods.iPerlCommunication.iPerlHead.IperlHead) && (BenchInfo != null))
-							{
-								(rr as TestMethods.iPerlCommunication.iPerlHead.IperlHead).BenchName = BenchInfo.TestBenchName;
-							}
-						}
+
+                        if ((sensPath != null) && (sensPath.RegisterReaders != null))
+                        {
+                            ProcessData.RegisterReaders = sensPath.RegisterReaders;
+                            foreach (var rr in sensPath.RegisterReaders)
+                            {
+                                if ((rr is TestMethods.iPerlCommunication.iPerlHead.IperlHead) && (BenchInfo != null))
+                                {
+                                    (rr as TestMethods.iPerlCommunication.iPerlHead.IperlHead).BenchName = BenchInfo.TestBenchName;
+                                }
+                            }
+                        }
+                        else
+                        {
+                            ProcessData.RegisterReaders = null;
+                        }
 
                         ///
                         /// Execute one test (single repetition of a repeated test)
@@ -1136,15 +1144,22 @@ namespace TBF.BenchControl.Sequences
 					if (testMethod != null && testMethod.CanTest(StateMachine.Procedure.MetersKind))
 					{
                         StateMachine.LoadTestParams(dfrrdData.Test);
-						ProcessData.RegisterReaders = sensPath.RegisterReaders;
 
-						foreach (var rr in sensPath.RegisterReaders)
-						{
-							if ((rr is TestMethods.iPerlCommunication.iPerlHead.IperlHead) && (BenchInfo != null))
-							{
-								(rr as TestMethods.iPerlCommunication.iPerlHead.IperlHead).BenchName = BenchInfo.TestBenchName;
-							}
-						}
+                        if ((sensPath != null) && (sensPath.RegisterReaders != null))
+                        {
+                            ProcessData.RegisterReaders = sensPath.RegisterReaders;
+                            foreach (var rr in sensPath.RegisterReaders)
+                            {
+                                if ((rr is TestMethods.iPerlCommunication.iPerlHead.IperlHead) && (BenchInfo != null))
+                                {
+                                    (rr as TestMethods.iPerlCommunication.iPerlHead.IperlHead).BenchName = BenchInfo.TestBenchName;
+                                }
+                            }
+                        }
+                        else
+                        {
+                            ProcessData.RegisterReaders = null;
+                        }
 
 						e = testMethod.Execute2ndPass(dfrrdData.Test, dfrrdData.RepetNr, dfrrdData.IntermediateData);
 
@@ -1195,15 +1210,22 @@ namespace TBF.BenchControl.Sequences
 				if (testMethod != null && testMethod.CanTest(StateMachine.Procedure.MetersKind))
 				{
                     StateMachine.LoadTestParams(test);
-					ProcessData.RegisterReaders = sensPath.RegisterReaders;
 
-					foreach (var rr in sensPath.RegisterReaders)
-					{
-						if ((rr is TestMethods.iPerlCommunication.iPerlHead.IperlHead) && (BenchInfo != null))
-						{
-							(rr as TestMethods.iPerlCommunication.iPerlHead.IperlHead).BenchName = BenchInfo.TestBenchName;
-						}
-					}
+                    if ((sensPath != null) && (sensPath.RegisterReaders != null))
+                    {
+                        ProcessData.RegisterReaders = sensPath.RegisterReaders;
+                        foreach (var rr in sensPath.RegisterReaders)
+                        {
+                            if ((rr is TestMethods.iPerlCommunication.iPerlHead.IperlHead) && (BenchInfo != null))
+                            {
+                                (rr as TestMethods.iPerlCommunication.iPerlHead.IperlHead).BenchName = BenchInfo.TestBenchName;
+                            }
+                        }
+                    }
+                    else
+                    {
+                        ProcessData.RegisterReaders = null;
+                    }
 
                     Event rsltTransBefore = Event.Done;
                     Event rsltTransAfter = Event.Done;
diff --git a/TBF/Properties/AssemblyInfo.cs b/TBF/Properties/AssemblyInfo.cs
index a08f2f3c4..358dbce10 100644
--- a/TBF/Properties/AssemblyInfo.cs
+++ b/TBF/Properties/AssemblyInfo.cs
@@ -29,5 +29,5 @@ using System.Runtime.InteropServices;
 //      Build Number
 //      Revision
 //
-[assembly: AssemblyVersion("2.18.1367.0")]
-[assembly: AssemblyFileVersion("2.18.1367.0")]
+[assembly: AssemblyVersion("2.18.1374.0")]
+[assembly: AssemblyFileVersion("2.18.1374.0")]