Warning: printf() [function.printf]: Too few arguments Não consigo resolver!

Por favor me ajudem a resolver esse problema no meu código, não faço ideia do que seja..

Warning: printf() [function.printf]: Too few arguments in D:\wamp\www\ass deus\wp-content\themes\Zest\includes\featuredposts\template.php on line 16

<div class="fp-slider clearfix">

    <div class="fp-slides-container clearfix">

        <div class="fp-slides">

            <?php if($the_slider) {

                foreach ($the_slider as $slider) { ?>

                    <div class="fp-slides-items">

                        <div class="fp-thumbnail">
                            <?php if($this->theme->display('thumbnail', $featuredposts_moreoptions)) {
                                if($slider['link'] && $slider['img']) {
                                    printf("%s<img src=\"$slider[img]\" />%s", "<a href=\"$slider[link]\" title=\"$slider[title]\">", "</a>");
                                } else {
                                    echo "<img src=\"$slider[img]\" />";
                                }
                            } ?>
                        </div>

                        <?php if( $this->theme->display('post_title', $featuredposts_moreoptions) || $this->theme->display('post_excerpt', $featuredposts_moreoptions)) { ?>
                               <div class="fp-content-wrap">
                                    <div class="fp-content">
                                        <?php if( $this->theme->display('post_title', $featuredposts_moreoptions) ) {  ?>
                                            <h3 class="fp-title">
                                                <?php if($slider['link']) {
                                                        printf("%s$slider[title]%s", "<a href=\"$slider[link]\" title=\"$slider[title]\">", "</a>");
                                                    } else {
                                                        echo $slider['title'];
                                                    }
                                                ?>
                                            </h3>
                                        <?php } ?>

                                        <?php if( $this->theme->display('post_excerpt', $featuredposts_moreoptions) ) { ?>
                                            <p>
                                                <?php echo $slider['content']; ?> 

                                                <?php if( $this->theme->display('featuredposts_readmore') ) { ?>
                                                        <a class="fp-more" href="<?php echo $slider[link]; ?>"><?php $this->theme->option('featuredposts_readmore'); ?></a>
                                                <?php } ?>
                                            </p>
                                        <?php } ?>
                                    </div>
                                </div>
                        <?php } ?>

                    </div>

                <?php } ?>

            <?php } ?>

        </div>

        <?php if($this->theme->display('next_prev', $featuredposts_moreoptions)) { ?>
            <div class="fp-prev-next-wrap">
                <div class="fp-prev-next">
                    <a href="#fp-next" class="fp-next"></a>
                    <a href="#fp-prev" class="fp-prev"></a>
                </div>
            </div>
        <?php } ?>

        <?php if($this->theme->display('pager', $featuredposts_moreoptions)) { ?>
            <div class="fp-nav">
                <span class="fp-pager">&nbsp;</span>
            </div>
        <?php } ?>

    </div>

</div>