Error when entering the game (Terraria)

The problem is to terraria when you start

PYC9I
Error reinstall XNA.

Lex-one
you can link to

PYC9I
He will find.

Lex-one
XNA Framework 4.0 is necessary to download ?

PYC9I
Yes

Lex-one
OK, I'll try and then accomplish your goal