I can't see the seeder/peer column on the pics you have posted, if there are no seeders (people with 100% of the file) then you won't be able to finish the download as the rest of the file is not available. Are there any other download links?

I am using Coinops Next, haven't tried the arcadia ones, they are the old version aren't they? I can definitely recommend the Next packages, they are great, I have just added the Teknoparrots package and it is really good, my install is coming up to abut 700gb now, need to buy a new hdd soon lol