1) There was a permissions error in the gallery folder, some of the files in subfolders keep getting the permissions set to 200, I had to change the persimmons to 755, but after a while they get set back. check with the host to determine why the permissions are being charged.
2) there are a number of gallery files that have not been uploaded to the server that is causing an issue, as an example:
3) your page has another slider script on tit that is causing a conflict:
TypeError: $(...).easySlider is not a function
4) you had hand edited the Connections/powergallery.php file and changed all the <powergallery> references to localhost, this was braking the connection, i had to change that back.