Generic red thumbnails in flash component

I am working with a photoflow flash component. When I test the flash page in my computer everything works well. Images load navigation bttons work. However when I upload the website to the server. The thumbnails appear as generic red boxes. I am trying to find out what is casing the thumbnails to register in this way.

link to red thumbnails http://pabloserrano.com/test/montalbano/home.htm