Undefined Index

Amigos,

estou recebendo a mensagem:

PHP Notice: Undefined index: slider in E:\Home\aconteceeventos\Web\congressoabpte\wp-content\themes\Interstellar\includes\featured.php on line 6

E infelizmente não sei consertar isso.

Alguém saberia como ajustar isso?

Segue o código:

<?php
global $options;
?>
	<?php
	//	Homepage Slideshow
	if ( '' <> $options['slider'] && isset($options['slider_enabled']) ) {

 // Get Slides
 $slides = array();
 foreach ($options['slider']['title'] as $k => $v) {
 $slides[] = array(
 'title' => $v,
 'link' => $options['slider']['link'][$k],
 'caption' => $options['slider']['caption'][$k],
 'image' => $options['slider']['image'][$k]
 );
 } ?>
 <div id="featured">
 <div id="featured-inside">
 <div class="flexslider home-slider">
 <ul class="slides">

 <?php foreach ($slides as $slide) { ?>
 <li>
 <div class="slide <?php if ( ! $slide['title']) echo "slide-no-title" ?>">
 <img src="<?php echo $slide['image'] ?>" title="<?php echo $slide['title']; ?>" alt="slider image"/>
 <?php if ($slide['title'] || $slide['caption'] ) { ?>
 <div class="slide-caption">
 <?php if ($slide['title']) { ?>
 <h2 class="slide-title">
 <?php if ( $slide['link'] <> '' ) { ?>
 <a href="<?php echo $slide['link']; ?>" title="<?php echo $slide['title'] ?>" class="slide-link">
 <?php echo $slide['title']; ?>
 </a>
 <?php } else { ?>
 <?php echo $slide['title']; ?>
 <?php } ?>
 </h2>
 <?php } ?>

 <?php if ($slide['caption']) {
 echo '<div class="flex-caption">'.$slide['caption'].'</div>';
 } ?>
 </div>
 <?php } ?>
 </div>

 </li>
 <?php } ?>
 </ul> <!-- .slides -->
 </div> <!-- .flexslider -->
 </div>
 <div class="stripe"></div>
 <div class="bottom-symbol"></div>
 <div class="double-divider"></div>
 </div>
	<?php }
	//	End Homepage Slider

Obrigado!