Hi Glas - have you tried viewing as a user rather than as the admin?
Also, this is my template :
Its slightly different to yours on the link to the globals for the image. What it will be is that in horizontal view you cant see it, and in classic view you can. In order to use the layout with just {$GLOBALS['threadfields']['gal_img']['value']} in it you need to have the image settings in the custom thread fields. Alternatively, you can just change the postbit template in to match the Classic settings -