Are you seeing errors in the remote Satellite Server log? How is preview going to remote Satellite Server? Wouldn't it normally use co-resident Satellite Server?
The path in the URL in the ss log looks a bit unusual: /site/pagina-inicio/info?.... Usually this is something like /site/Satellite?...
Was some customisation done to get this path, or is this a vanity URL?
Also, there should be a stack trace after that log message. Can you post that as well?
Setting loggers com.fatwire.logging.cs and com.fatwire.logging.cs.db to DEBUG may help shed more light on the problem.