diff --git a/src/Core/ServiceWrapper/WrapperService.cs b/src/Core/ServiceWrapper/WrapperService.cs
index 9ebda00..04ba60d 100644
--- a/src/Core/ServiceWrapper/WrapperService.cs
+++ b/src/Core/ServiceWrapper/WrapperService.cs
@@ -280,7 +280,6 @@ namespace WinSW
             Log.Info("Starting " + this.descriptor.Executable + ' ' + startArguments);
 
             // Load and start extensions
-            Console.WriteLine("Loading extensinos");
             this.ExtensionManager.LoadExtensions();
             this.ExtensionManager.FireOnWrapperStarted();
 
diff --git a/src/Core/WinSWCore/Configuration/YamlConfiguration.cs b/src/Core/WinSWCore/Configuration/YamlConfiguration.cs
index 976a648..4eb18fb 100644
--- a/src/Core/WinSWCore/Configuration/YamlConfiguration.cs
+++ b/src/Core/WinSWCore/Configuration/YamlConfiguration.cs
@@ -648,16 +648,27 @@ namespace WinSW.Configuration
         {
             get
             {
+                int extensionNumber = 1;
+
                 if (this.YamlExtensionsConfiguration is null)
                 {
                     return new List<string>(0);
                 }
 
-                var result = new List<string>();
+                var result = new List<string>(this.YamlExtensionsConfiguration.Count);
 
                 foreach (var item in this.YamlExtensionsConfiguration)
                 {
-                    result.Add(item.GetId());
+                    try
+                    {
+                        result.Add(item.GetId());
+                    }
+                    catch (InvalidDataException)
+                    {
+                        throw new InvalidDataException("Id is null in Extension " + extensionNumber);
+                    }
+
+                    extensionNumber++;
                 }
 
                 return result;
diff --git a/src/Core/WinSWCore/Configuration/YamlExtensionConfiguration.cs b/src/Core/WinSWCore/Configuration/YamlExtensionConfiguration.cs
index 3d72cc3..9ea32f6 100644
--- a/src/Core/WinSWCore/Configuration/YamlExtensionConfiguration.cs
+++ b/src/Core/WinSWCore/Configuration/YamlExtensionConfiguration.cs
@@ -22,7 +22,7 @@ namespace WinSW.Configuration
         {
             if (this.ExtensionId is null)
             {
-                throw new InvalidDataException("Extension Id can't be empty");
+                throw new InvalidDataException();
             }
 
             return this.ExtensionId;
@@ -32,7 +32,7 @@ namespace WinSW.Configuration
         {
             if (this.ExtensionClassName is null)
             {
-                throw new InvalidDataException("Extension ClassName can't be empty");
+                throw new InvalidDataException($@"Extension ClassName is empty in extension {this.GetId()}");
             }
 
             return this.ExtensionClassName;
@@ -42,7 +42,7 @@ namespace WinSW.Configuration
         {
             if (this.Settings is null)
             {
-                throw new InvalidDataException("Extension settings not found");
+                throw new InvalidDataException(@$"Extension settings is empty in extension {this.GetId()}");
             }
 
             return this.Settings;
diff --git a/src/Core/WinSWCore/Extensions/IWinSWExtension.cs b/src/Core/WinSWCore/Extensions/IWinSWExtension.cs
index 708968f..fb683e4 100644
--- a/src/Core/WinSWCore/Extensions/IWinSWExtension.cs
+++ b/src/Core/WinSWCore/Extensions/IWinSWExtension.cs
@@ -33,7 +33,7 @@ namespace WinSW.Extensions
         /// <summary>
         /// Configure the extension from Yaml configuration
         /// </summary>
-        /// <param name="descriptor">Yaml Service Descptor</param>
+        /// <param name="descriptor">YamlConfiguration</param>
         /// <param name="config">Configuration Node</param>
         void Configure(IWinSWConfiguration descriptor, YamlExtensionConfiguration config);
 
diff --git a/src/Core/WinSWCore/Util/ConfigHelper.cs b/src/Core/WinSWCore/Util/ConfigHelper.cs
index 07bbe3f..8579a2b 100644
--- a/src/Core/WinSWCore/Util/ConfigHelper.cs
+++ b/src/Core/WinSWCore/Util/ConfigHelper.cs
@@ -38,7 +38,7 @@ namespace WinSW.Util
         {
             value = value.ToLower();
 
-            if (value.Equals("true") || value.Equals("yes") || value.Equals("on"))
+            if (value.Equals("true") || value.Equals("yes") || value.Equals("on") || value.Equals("y") || value.Equals("1"))
             {
                 return true;
             }