Something's Wrong With my Player Character

When I try to play as my player character Will, I noticed that he didn't show up on the file select. When I tried to play as him, the game wouldn't let me. I don't know if the same is happening to my world since it won't let me past the player select screen. Can anyone help me with this?

I should note that I am playing tModloader for 1.3.4.4, and I attempted to upgrade to tModloader for 1.3.5, but I heard that one of my mods still hasn't updated to I attempted to downgrade to my original...

Something's Wrong With my Player Character