I'm currently using version 1.6.3 and having trouble figuring out how to get conditional logic to work with checkboxes.
My example:
A user fills out an address form. At the bottom of the form is a checkbox for "Same as Billing Address." If checked, the section below (for Shipping Address) should not display.
While editing the form, I choose the Shipping Address section break, and enable Conditional Logic. Options for drop downs, input and radio buttons appear, but nothing for checkboxes. I did a few tests, and it seems that for any situation involving conditional logic, checkboxes do not appear as an option within the list.