Thanks for all of your time and effort, however; I feel like we’ve kind of ended up on a tangent. to simplify the issue I’m reporting; both installations have the SAME version of ACF (4.3.4). one installation has WP 3.5 and the other has 3.7.1
get_field_object() works as expected in WP 3.5: it reads the value of ‘_radio_button’, sees it’s set as ‘radio_button’, returns a field_key value of ‘radio_button’ and then returns the value of ‘radio_button’ as expected.
on WP 3.7.1 the same code reads the value of ‘_radio_button’, sees it’s set as ‘radio_button’, returns a field key value of ‘field_radio_button’ and then returns an invalid object (because there is no ACF in the post that has a field key of ‘field_radio_button’)
this is the issue that i’m reporting. all the other stuff is fluff that has apparently distracted from the real issue. (sorry about that)
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