CommunityID/modules/install/views/scripts/permissions/index.phtml

<h3>
    <?php echo $this->translate('Please correct the following problems before proceeding:') ?>
</h3>
<ul>
    <?php foreach ($this->errors as $error): ?>
        <li style="list-style-type:circle"><?php echo $error ?></li>
    <?php endforeach ?>
</ul>
<div style="margin-top:20px">
    <input type="button" id="check" value="<?php echo $this->translate('Check again')?>" />
    <script type="text/javascript">
        var oButton = new YAHOO.widget.Button(
            "check",
            {
                onclick: {fn: function() {location.href="<?php echo $this->base ?>/install/credentials"}}
            }
        );
    </script> 
</div>