Form doesn't update fields in Adobe Reader XI

Question

I created a form in Acrobat X Pro, it has a bunch of radio buttons the user must select. The last page is the results page, which has JS code that is executed when entering the page. If I test the form in Acrobat X, the results page properly updates the results fields as soon as you enter the page.
But if I open the page in Adobe Reader XI, the fields in the result page will not update until I save the page. This didn't happened before, forms always behaved the same in Acrobat and Reader. I also tested forms I created months ago, and had the same result.
Does anybody know what's going on here?  Thank you.

Answer 1

After doing more testing, the Page Open event works in Reader but is very slow updating the result page that has the code and uses the Page Open event.
In Acrobat happens instantly, but in Reader takes a loooong time, sometimes seems that doesn't even update, as it takes forever. Wonder if my Reader's settings are screwed up?
Basically you have two pages, page one with a 4-choice radio button and, page two with a text field to report the value of the selected button choice.
Page two has the following code as Page Opens:
     var buttonV = this.getField("Group1").value;
     getField("Text1").value = buttonV;