You really should have just commented on the thread, instead of copying jacob1's entire comment. As for opening those saves, the server gives them to you without a file extension and TPT doesn't like that. Just add .cps to their names and it'll open them. EDIT: Well, except maybe for 12. 12 seems to be corrupted.
Save 12 is corrupted, along with a few others. I think there is valid data in there somewhere, it's just that since it was one of the first uploaded saves ever, the save format might not be compatible with modern TPT.
If I have time I'll see if I can get it open. I'm sure its some kind of junk, but would definitely be cool to see what's inside.