diff --git a/VectoCore/VectoCore/InputData/Reader/ComponentData/TorqueConverterDataReader.cs b/VectoCore/VectoCore/InputData/Reader/ComponentData/TorqueConverterDataReader.cs
index cb273d90fc78a79d95fbbb0dc9797682b4068b6c..b86305836c3b55afeb88b2b96a8a165332579288 100644
--- a/VectoCore/VectoCore/InputData/Reader/ComponentData/TorqueConverterDataReader.cs
+++ b/VectoCore/VectoCore/InputData/Reader/ComponentData/TorqueConverterDataReader.cs
@@ -54,6 +54,9 @@ namespace TUGraz.VectoCore.InputData.Reader.ComponentData
 
 		public static TorqueConverterData Create(DataTable data, PerSecond referenceRpm, PerSecond maxRpm)
 		{
+			if (data == null)
+				throw new VectoException("TorqueConverter Characteristics data is missing.");
+
 			if (data.Columns.Count != 3) {
 				throw new VectoException("TorqueConverter Characteristics data must consist of 3 columns");
 			}
@@ -65,19 +68,19 @@ namespace TUGraz.VectoCore.InputData.Reader.ComponentData
 			if (HeaderIsValid(data.Columns)) {
 				characteristicTorque = (from DataRow row in data.Rows
 					select
-						new TorqueConverterEntry() {
-							SpeedRatio = row.ParseDouble(Fields.SpeedRatio),
-							Torque = row.ParseDouble(Fields.CharacteristicTorque).SI<NewtonMeter>(),
-							TorqueRatio = row.ParseDouble(Fields.TorqueRatio)
-						}).ToList();
+					new TorqueConverterEntry() {
+						SpeedRatio = row.ParseDouble(Fields.SpeedRatio),
+						Torque = row.ParseDouble(Fields.CharacteristicTorque).SI<NewtonMeter>(),
+						TorqueRatio = row.ParseDouble(Fields.TorqueRatio)
+					}).ToList();
 			} else {
 				characteristicTorque = (from DataRow row in data.Rows
 					select
-						new TorqueConverterEntry() {
-							SpeedRatio = row.ParseDouble(0),
-							Torque = row.ParseDouble(2).SI<NewtonMeter>(),
-							TorqueRatio = row.ParseDouble(1)
-						}).ToList();
+					new TorqueConverterEntry() {
+						SpeedRatio = row.ParseDouble(0),
+						Torque = row.ParseDouble(2).SI<NewtonMeter>(),
+						TorqueRatio = row.ParseDouble(1)
+					}).ToList();
 			}
 			return new TorqueConverterData(characteristicTorque, referenceRpm, maxRpm);
 		}
diff --git a/VectoCore/VectoCore/InputData/Reader/ComponentData/TransmissionLossMapReader.cs b/VectoCore/VectoCore/InputData/Reader/ComponentData/TransmissionLossMapReader.cs
index 9cdf098823f09718c726f431d5b89cf8fff1aba2..2198d7812b87181d49d2f4d0cc1b54c56a178082 100644
--- a/VectoCore/VectoCore/InputData/Reader/ComponentData/TransmissionLossMapReader.cs
+++ b/VectoCore/VectoCore/InputData/Reader/ComponentData/TransmissionLossMapReader.cs
@@ -95,11 +95,15 @@ namespace TUGraz.VectoCore.InputData.Reader.ComponentData
 		/// <returns></returns>
 		public static TransmissionLossMap Create(double efficiency, double gearRatio, string gearName)
 		{
+			if (double.IsNaN(efficiency)) {
+				throw new VectoException("TransmissionLossMap: Efficiency is not a number.");
+			}
+
 			if (efficiency <= 0) {
-				throw new VectoException("Efficiency for gear {0} must be greater than 0", gearName);
+				throw new VectoException("TransmissionLossMap: Efficiency for gear {0} must be greater than 0", gearName);
 			}
 			if (efficiency > 1) {
-				throw new VectoException("Efficiency for gear {1} must not be greater than 1", gearName);
+				throw new VectoException("TransmissionLossMap: Efficiency for gear {1} must not be greater than 1", gearName);
 			}
 			var entries = new List<TransmissionLossMap.GearLossMapEntry> {
 				new TransmissionLossMap.GearLossMapEntry(0.RPMtoRad(), 1e5.SI<NewtonMeter>(),
@@ -126,20 +130,20 @@ namespace TUGraz.VectoCore.InputData.Reader.ComponentData
 		private static List<TransmissionLossMap.GearLossMapEntry> CreateFromColumnNames(DataTable data)
 		{
 			return (from DataRow row in data.Rows
-				select new TransmissionLossMap.GearLossMapEntry(
-					inputSpeed: row.ParseDouble(Fields.InputSpeed).RPMtoRad(),
-					inputTorque: row.ParseDouble(Fields.InputTorque).SI<NewtonMeter>(),
-					torqueLoss: row.ParseDouble(Fields.TorqeLoss).SI<NewtonMeter>()))
+					select new TransmissionLossMap.GearLossMapEntry(
+						inputSpeed: row.ParseDouble(Fields.InputSpeed).RPMtoRad(),
+						inputTorque: row.ParseDouble(Fields.InputTorque).SI<NewtonMeter>(),
+						torqueLoss: row.ParseDouble(Fields.TorqeLoss).SI<NewtonMeter>()))
 				.ToList();
 		}
 
 		private static List<TransmissionLossMap.GearLossMapEntry> CreateFromColumIndizes(DataTable data)
 		{
 			return (from DataRow row in data.Rows
-				select new TransmissionLossMap.GearLossMapEntry(
-					inputSpeed: row.ParseDouble(0).RPMtoRad(),
-					inputTorque: row.ParseDouble(1).SI<NewtonMeter>(),
-					torqueLoss: row.ParseDouble(2).SI<NewtonMeter>()))
+					select new TransmissionLossMap.GearLossMapEntry(
+						inputSpeed: row.ParseDouble(0).RPMtoRad(),
+						inputTorque: row.ParseDouble(1).SI<NewtonMeter>(),
+						torqueLoss: row.ParseDouble(2).SI<NewtonMeter>()))
 				.ToList();
 		}