So, here is what happens in Filler.... InfoPath caches form templates to make them load faster next time. But sometimes, when we are working on a form, we'll publish one with an issue that will block it from opening in Filler at all (like your template had). Then the "bad" template is stuck in the cache, and since it won't open, it won't update! Removing it from the cache lets you start over. :-)
Hilary Stoupa
