Gallery carousel not working

Hi! I'm creating a web site in which, first I enabled the Catch Gallery, and later I created a couple of Portfolios with a Gallery of images (http://fotons.eu/portfolio/flors/ and http://fotons.eu/portfolio/paisatges/), but I am not able to create the Carousel of images. I understand that in the "Gallery adjustment" part of the "Block" section I should leave the "Linked to" to "nothing" option, right? Because if I activate one of the other two options I can either open the details of every image of visualize them one by one, but not in the Carousel mode. I have checked the other menus to see if should activate any specific option for the carousel but I have not been able to see anything. I guess that I am missing something but after trying for a couple of days I am completely lost. I will really appreciate if anybody can provide any hint of how to solve this issue. Thank you very much for your kind help. Santiago.