I usually have wordpress installed in the subdirectory wordpress on my webserver. While accessing it through the parrent directory, where the wordpress index.php lies.

The wordpress mobile pack unfortunately pointed the img-Tags to the place of the images, but the wordpress directory was missing.

As I can’t open a ticket on assembla, here is my bugfix:

Replace line 485 in the file wpmp_transcoder.php. Original line:
$base = get_option('home') . "/wp-content/plugins/wordpress-mobile-pack/plugins/wpmp_transcoder/";
Working line:
$base = get_bloginfo('wpurl') . "/wp-content/plugins/wordpress-mobile-pack/plugins/wpmp_transcoder/";

get_option('siteurl') should work as well.

Best regards
Phylu