<h2><?php echo __('Installation Error'); ?></h2>
<p><?php echo __('Before installation can continue, the following errors must be resolved:'); ?></p>
<ol>
<?php foreach($this->installer->getErrorMessages() as $errorMessage): ?>
    <li>
        <h3 class="error"><?php echo $errorMessage['header']; ?></h3>
        <p><?php echo $errorMessage['message']; ?></p>
    </li>
<?php endforeach; ?>
</ol>