FrozenToothpaste
Skeletron Prime
That's scary.Well, I tried solution one. My first world, Verde, had no .bak file, so that was a no go. My second world had one, So I tried it. I launched terraria, and started the world. Surprisingly, it launched. But then the game froze and I got two achievements, rock bottom and into orbit, which essentially means my character was flung around the world in an instant. I'm losing hope at this point, especially since it's happened twice and I don't want to lose another world. P.S my worlds crash if I try to enter them, and after trying the fix my world looked the same, saying unknown and showing hollow instead of crimson.
Well my character went blank when I used inventory editor but I think that is fine because I didn't use that character a lot ( seriously guys I'm not cheating right now, it ruined my gameplay)
Also start a fresh character and world. Everytime you done playing, back up your files by copying the .wrld and .plr to another file. So when it corrupts, you can copy your backed up world and replace the corrupted files with the backed up ones.
I don't recommend steam cloud because another thread said this might be the problem.