diff --git a/AssemblyVersion.cs b/AssemblyVersion.cs
index fea625a..3d86808 100644
--- a/AssemblyVersion.cs
+++ b/AssemblyVersion.cs
@@ -16,5 +16,5 @@ using System.Reflection;
 //
 // You can specify all the values or you can default the Revision and Build Numbers 
 // by using the '*' as shown below:
-[assembly: AssemblyVersion("3.0.0.337")]
-[assembly: AssemblyFileVersion("3.0.0.337")]
+[assembly: AssemblyVersion("3.0.0.338")]
+[assembly: AssemblyFileVersion("3.0.0.338")]
diff --git a/Core/Settings.cs b/Core/Settings.cs
index 0ba75e8..bb04d29 100644
--- a/Core/Settings.cs
+++ b/Core/Settings.cs
@@ -156,8 +156,9 @@ namespace ScrewTurn.Wiki {
 		public static string PublicDirectoryName {
 			get {
 				string dir = WebConfigurationManager.AppSettings["PublicDirectory"];
+				if(string.IsNullOrEmpty(dir)) throw new InvalidConfigurationException("PublicDirectory cannot be empty or null");
 				dir = dir.Trim('\\', '/'); // Remove '/' and '\' from head and tail
-				if(dir == null || dir.Length == 0) throw new Exception("PublicDirectory cannot be null.");
+				if(string.IsNullOrEmpty(dir)) throw new InvalidConfigurationException("PublicDirectory cannot be empty or null");
 				else return dir;
 			}
 		}