The ClassNotFoundExceptions thrown which are related to the specification of insecure JVM command-line arguments are confusing in the default case where the codebase_lookup parameter is not set to false. In this case the ClassNotFoundException which indicates that the class wasn't loaded because it was unsigned is squelched and another ClassNotFoundException is raised which indicates that it wasn't found because it wasn't on the web server. We need to preserve the CNFE raised from the first check and re-raise it later if necessary.