Service created using perlsvc installs ok and the service starts using -install auto. But the PerlSvc::Startup is not called

I'm using PDK 9.5 and I have create a service using PerlSvc. The service runs OK interactively but when I execute the exe with -install auto, the service installs and successfully starts, but the PerlSvc::Startup function I have defined is never called. How can I trouble shoot this and why wouldn't that function be called?