I've uploaded my compilation and it was approved....then I set it as the default file. I tried to download it and "This download is temporarily unavailable" comes up. I just tried again and not only is that file unavailable but the previous one that was working is also unavailable.

Hi Afk,

There's a bug with our upload system right now. We're working on fixing this as soon as possible. To work around this, you will have to delete those two files and attempt to re-upload again. That should solve your issue. If it doesn't, repeat the process again. We're very sorry that you have to deal with this and we're working very hard on having this fixed as soon as possible.

This is being actively worked on still.