Fixed a typo in an error message.

Author: SteveIves

MethodCatalogAPI/Smc.dbl

@@ -64,7 +64,7 @@ namespace CodeGen.MethodCatalogAPI
         proc
             ;;Make sure the file is present
             if (!File.Exists(inputFile))
-                throw new ApplicationException("Failed to method catalog XML file!")
+                throw new ApplicationException("Method catalog XML file not found!")
 
             ;;And parse it
             parseMethodCatalogXml(inputFile)