OK, after many MONTHS of trying to figure this out, I believe I've finally conquered the new Photobucket interface and figured out how to access the full-size version of these wallpapers. Click on the thumbnail images above and then click on the magnifying glass-like icon in the lower right corner of the image. Click on the magnifying glass a second time and you should get the full-size image that you can then right click and save. If this does not work, please let me know by leaving a comment on this post. Thanks!