Very buggy:
1) The HTML for radio buttons aren't wrapped properly, so impossible to style nicely.
2) Some HTML elements have IDs/classes beginning with numbers (e.g. id="19_classname"), which is invalid - you can't target ID's that begin with numbers with CSS!
3) The conditional feature is useless. If I set a conditional field to be "required", it HAS to be populated, even if it's not showing on the screen (because the condition to trigger the field to show has not been met). It should only be "required" if the field is showing.
That's just to name a few.