I started getting this message after updating a few modules, the first few updates went normally then I started getting this message when applying the update after downloading it.
This line reads:
$requirements['update_core'] = _update_requirement_check($data['drupal'], 'core');
I have found this issue listed in the openoutreach distribution issue cue, however there does not appear to be a fix.
Install profile Commerce Kickstart (commerce_kickstart-7.x-2.0-rc4)