I used the php tag <?php the_post_thumbnail( 'full' ); ?>
So, if I set a post thumbnail with the wordpress gallery, the image is shown full.
But if i set the thumbnail via NextGen Gallery and this tag is insert, the image is included as thumbnail (to the thumbs folder). So i can't get a full image.
In my example: He get this image (http://gamingtown.de/wp-content/gallery/pes-2011/thumbs/thumbs_pes2011_argentina-vs-italy.jpg), but I want this image when I say "full" -> http://gamingtown.de/wp-content/gallery/pes-2011/pes2011_argentina-vs-italy.jpg
Hopefully you can help me!