I'm trying to write a new module, and having some trouble with the forms API. I'm deploying this under Drupal 5. I've been reading the tutorials and documentation for the forms API. A lot of this module is cut and paste from the documentation. I'm able to generate a form properly, and even theme it. It displays properly in my browser. However, when I submit the form, the _submit function isn't called. The code is here: http://phantom.dragonsdawn.net/~gordon/customerportal.module The browser sends the form data via POST, and the web server responds with "200 OK", sending back the form HTML. It doesn't log any errors. I have no idea how to go about debugging Drupal to determine why the _submit function isn't being called. Can anyone give me some pointers?