I checked your gallery, and there is something wrong with your server or permissions unrelated to Imagevue. Look at your pictures, returns SERVER ERROR:
http://www.dimagenia.com/content/AMIGOS ... L-JEFE.jpg
Of course the same would apply to the thumbnail, which I dont even know if exists, but that is pretty irrelevant:
http://www.dimagenia.com/content/AMIGOS ... L-JEFE.jpg
First of all, I would log in to FTP and check that the file is there. Perhaps also check its permissions. Then, I would contact your host provider with a link to your image and ask why the server is returning "server error" when trying to access the image. I don't know what changed or how this crept into your system, but it is not anything Imagevue has the power to do.