download error

I downloaded the Launcher I put everything straight as request, folder ... more time to download it goes Going ... going ... More time comes that it stops is lock, it does not download anything is just the launcher Open stopped. please help me I really want to play Thanks, Good Night, Good...

I'm trying to install the mod and half way through the download I got this message. it refuses to download now. any ideas on how I can fix it? I would attach a screenshot but apparently that's to big for the server.