Stevie,
This is quite easy to fix.
In the index.php file of wp-orbit-slider, search for $datacaption and $datathumb. On the places where these are set, just add some spaces, so it will look something like this:
$datathumb = ' data-thumb="' . $urlthumb . '" '
The alt error can be solved by adding an empty alt tag (alt="") to the <img> attribute in the same index.php file.
Hope this helps.
