Well that's what I can not install, I do not know if it's because it's in Spanish or why, always stop at 75% put the following
Ajax request failed for process installModules = true with error.
Service Unavailable
Attached image
Pd: Sorry for my English, I use google translate
https://drive.google.com/file/d/0B67eoATSRGuuRVFOWGFhUlVFcFE