Hi,
If you want to limit by chars you have to replace the nlp_custom_excerpt function from the file network-latest-posts.php on line 885 by this one:
function nlp_custom_excerpt($count, $content, $permalink, $excerpt_trail){
if($count == 0 || $count == 'null') { $count = 55; }
/* Strip shortcodes
* Due to an incompatibility issue between Visual Composer
* and WordPress strip_shortcodes hook, I'm stripping
* shortcodes using regex. (27-09-2012)
*
* $content = strip_tags(strip_shortcodes($content));
*
* replaced by
*
* $content = preg_replace("/\[(.*?)\]/i", '', $content);
* $content = strip_tags($content);
*/
$content = preg_replace("/\[(.*?)\]/i", '', $content);
$content = strip_tags($content);
// Limit the number of characters
$content = substr($content, 0, $count);
$content = $content . '...';
// Add the trail
switch( $excerpt_trail ) {
// Text
case 'text':
$content = $content.'<a href="'.$permalink.'">'._('more').'</a>';
break;
// Image
case 'image':
$content = $content.'<a href="'.$permalink.'"><img src="'.plugins_url('/img/excerpt_trail.png', __FILE__) .'" alt="'._('more').'" title="'._('more').'" /></a>';
break;
// Text by default
default:
$content = $content.'<a href="'.$permalink.'">'._('more').'</a>';
break;
}
// Return the excerpt
return $content;
}