Is this function now depricated?

I used the video theme by R.Bhavesh with wordpress 3.3
I made an automatic update to wordpress 3.6 which was a bad idea. Everything works except the appearance of featured images: Ihe image is not shown on my blog (only archives) and I get this error message:

Fatal error: Call to undefined function bdw_get_images_with_info() in /htdocs/wp-content/themes/Video/archive.php on line 65

Btw, when I make a new post, no featured image is shown (I mean the error msg above is not shown which means that no image at all was processed? Is my wordpress mysql db broken? My older featured images on older posts “would be shown” if bdw_get_images_with_info() would exist but for those I get the bdw_get_images_with_info() error.

Here a snippet:

<?php if($post_images[0]){ global $thumb_url;?>
                <?php
				$img_size = bdw_get_images_with_info($post->ID,'listing-thumb');
				$post_images = $img_size[0]['file'];

What should I do? Thanks.