I have a windows computer and a Linux computer. The windows one works fine when I try to boot up Terraria but my Linux (debian) computer just has a black box when I try to boot up the game. Is there any way to fix this?
Did you have it on the cloud?
If you didn't go to Documents\My Games\Terraria\Players and you should see 2 files with your characters name, one PLR and one PLR.BAK. Delete the PLR file and rename the PLR.BAK to PLR and you may see your character again.