Weird… is it failing to download this file: https://lutris.net/files/games/unreal-gold/old-unreal-227i.tar.bz2 ? Because the link is valid, it downloads just fine.
It should be noted that downloads sometimes have reliability issues (not for myself, but it can happen depending on the internet provider) which is why I’m planning to migrate the static files to Amazon S3 in the next weeks.
Update: Ok, issue reproduced, it wasn’t about that file after all. I’ll work on a fix.