Potential BUG: Pre-Render Causing Forms To Break

I have several forms that all work without any problems. However, as soon as I add the pre render filter, the forms break with the "We could not locate your form". There doesn't even have to be any further code in the method, just the simple statement below will cause the forms to break:

add_filter("gform_pre_render", "pre_render_function");
function pre_render_function($form) {
};

This is in the functions.php file, so it should be in the right place.

Anyone had issues with this? Am I overlooking something obvious?

Thanks,

JB

Ah, that's the problem. I only looked at the top part of the filter documentation and not the examples, where it shows the return statement.

So, adding the "return $form;" is obviously needed, which now works properly.

Might be helpful to add into the documentation that the function call needs to return the form. Again, that may be obvious, but easy to overlook if it's not stated. :-)

Thanks for jumping on it so quickly!