diff --git a/TBF/BenchControl/Output/FileWriters/IperlLogger/Writer.cs b/TBF/BenchControl/Output/FileWriters/IperlLogger/Writer.cs
index 9efc85b22..1c50b552d 100644
--- a/TBF/BenchControl/Output/FileWriters/IperlLogger/Writer.cs
+++ b/TBF/BenchControl/Output/FileWriters/IperlLogger/Writer.cs
@@ -37,8 +37,7 @@ namespace TBF.BenchControl.Output.FileWriters.IperlLogger
 		/// Results to print
 		/// </summary>
 		Results.Entities.Batch batch;
-
-		StreamWriter logger;			/// Logs specified by LU
+        string fileName;
 
 
 		public Writer() {}
@@ -95,22 +94,21 @@ namespace TBF.BenchControl.Output.FileWriters.IperlLogger
 		public IOperation WriteResultsOp(Results.Entities.Batch batch)
 		{
             if (currentOp != CurrentOp.None)
+            {
                 throw new Exception("Sequence error");
-            else
-                currentOp = CurrentOp.WriteResults;
+            }
 
             this.batch = batch;
-
-			string fname = GetLogFileName(batch.StartTime);
+            currentOp = CurrentOp.WriteResults;
 
 			try
 			{
-				logger = new StreamWriter(System.IO.File.Create(fname));
+                fileName = GetLogFileName(batch.StartTime);
 			}
 			catch
 			{
-				logger = null;
-				log.ErrorFormat("Was not able to open LU log file {0}", fname);
+                fileName = string.Empty;
+				log.Error("Unable to create IperlLogger file name");
 			}
 
             return this;
@@ -129,17 +127,24 @@ namespace TBF.BenchControl.Output.FileWriters.IperlLogger
 		{
             if (currentOp == CurrentOp.WriteResults)
             {
-                if (!opCompleted)
+                if (batch.WaterMeters.Count == 0) return Event.ResultsWritten;
+
+                if (!opCompleted && !string.IsNullOrEmpty(fileName))
                 {
-                    if (batch.WaterMeters.Count == 0) return Event.ResultsWritten;
-                    try
+                    log.WarnFormat("{0} : Going to write Iperl Log to file {1}", Name, fileName);
+
+                    using (TextWriter logger = new StreamWriter(System.IO.File.Create(fileName)))
                     {
-                        WriteLogsToDisk(logger, batch);
-                        log.WarnFormat("Batch {0} written by {1}", batch.BatchNr, Name);
-                    }
-                    catch (Exception)
-                    {
-                        log.ErrorFormat("Error writing batch {0} by {1}", batch.BatchNr, Name);
+                        try
+                        {
+                            WriteLogsToDisk(logger, batch);
+                            log.WarnFormat("{0} : Batch {1} written OK", Name, batch.BatchNr);
+                        }
+                        catch
+                        {
+                            anyError = true;
+                            log.WarnFormat("{0} : Failed to write batch {1}", Name, batch.BatchNr);
+                        }
                     }
 
                     opCompleted = true;
@@ -163,18 +168,20 @@ namespace TBF.BenchControl.Output.FileWriters.IperlLogger
 		}
 
 
-		public Retv WriteLogsToDisk(StreamWriter logger, Results.Entities.Batch batch)
+		public Retv WriteLogsToDisk(TextWriter logger, Results.Entities.Batch batch)
         {
 #if TURA_IPERL || TURA_SPECIAL
 
-            if (logger == null)
-            {
-                return Retv.Error;          /// No logger
-            }
-
-
+            /// Obtain one representative water meter data
             Results.Entities.WaterMeter wm0 = null;
-            foreach (var m in batch.WaterMeters) if (m != null) { wm0 = m; break; }
+            foreach (var m in batch.WaterMeters)
+            {
+                if (m != null)
+                {
+                    wm0 = m;
+                    break;
+                }
+            }
             if (wm0 == null)
             {
                 return Retv.Error;          /// Not a single watermeter in the batch
@@ -186,7 +193,15 @@ namespace TBF.BenchControl.Output.FileWriters.IperlLogger
             {
                 return Retv.Error;          /// No test infos
             }
-
+            else
+            {
+                log.Info("test infos:");
+                foreach (var ti in testInfos)
+                {
+                    log.InfoFormat("ID_WZTyp={0} Rev_WZTyp={1} PruefungsNr={2} Str={3} QBezeichnung={4} Range={5} TbfTestName={6}",
+                                    wm0.WaterMeterData.WMTypeId, wm0.WMTypeRevision, ti.PruefungsNr, ti.PruefungsNrStr, ti.QBezeichnung, ti.Range, ti.TestName);
+                }
+            }
 
             Results.Entities.WaterMeterData wmData = wm0.WaterMeterData;
 
@@ -202,12 +217,13 @@ namespace TBF.BenchControl.Output.FileWriters.IperlLogger
                 {
                     totalTestTime += wm0trs[j].TargetTime();
                 }
-                else if (!string.IsNullOrEmpty(testInfos[j].TestName))
-                {
-                    return Retv.Error;      /// Missing test result for one of specified tests
-                }
+                //else if (!string.IsNullOrEmpty(testInfos[j].TestName))
+                //{
+                //    return Retv.Error;      /// Missing test result for one of specified tests
+                //}
             }
 
+
 			try
 			{
 				logger.WriteLine("[Wasserzähler-Daten]");
@@ -441,7 +457,7 @@ namespace TBF.BenchControl.Output.FileWriters.IperlLogger
 		}
 
 
-		void WriteOneToDisk(StreamWriter logger, string id, Results.Entities.TestRslt tr)
+		void WriteOneToDisk(TextWriter logger, string id, Results.Entities.TestRslt tr)
 		{
             logger.WriteLine(string.Format("Prüfvolumen{0}={1}", id, Config.Units.ConvertTo(Unit.l, tr.TestData.TargetVolume).ToString(Program.AltCulture)));
 			logger.WriteLine(string.Format("Prüfmasse{0}={1}", id, 0));							/// 3,72610