Your PhotoShelter xml feed is broken. Remove all non-alphanumeric characters in your image or gallery descriptions in PhotoShelter. Remove all quotes, brackets, dashes, basically anything that isn't a number or letter. If that doesn't solve your problem, contact PhotoShelter and tell them your gallery xml contains errors.
BlairSeitz.com features the work of award-winning photographer Blair Seitz, showcasing his files of more than 60,000 images – of Pennsylvania’s people and nature, documentary work in Asia, East Africa and the Middle East, and other wonders he encounters in his travels.