I've been editing within catalog/view/options/type/configurable.phtml and this other guy working on the template has been editing all over the place. Suddenly, the whole configurable options block (that renders configurable.phtml) went missing from the page. The following blocks are still in view.phtml:
<?php if ($_product->isSaleable() && $this->hasOptions()):?>
<?php echo $this->getChildChildHtml('container1', '', true, true) ?>
<?php endif;?>
and
<?php if ($_product->isSaleable() && $this->hasOptions()):?>
<?php echo $this->getChildChildHtml('container2', '', true, true) ?>
<?php endif;?>
What else might be missing that would cause the disappearance of the configurable options block? There are no errors in the server or Magento logs that are applicable. Nor any JavaScript errors.