Work if no language file exists

EduNetworkBuilder/TranslationWindow.cs

@@ -341,6 +341,11 @@ namespace EduNetworkBuilder
 
         void Load()
         {
+            if(! File.Exists(filename))
+            {
+                //The file does not exist yet.  Nothing to load.  Exit gracefully
+                return;
+            }
             Items.Clear();
             ResXResourceReader InResx = new ResXResourceReader(filename);
             InResx.UseResXDataNodes = true;