Slitherine

Just bought the game and updated and I get an exception related Microsoft.Xna

It all seemed to load ok, but I cannot play the game.

Of course I cannot copy and paste the exception text.

It starts as such ---
The character ' ' (0x0009) is not available in this SpriteFont. If applicable, adjust the font's start and end CharacterRegions to include this character.

then it is about 38 more lines of text.

I spent £35 on this. Please help asap.

Which version of the game are you running?
You can check the version in the bottom left of the game main menu screen.

1.39.5512.22560

Have you previously installed any demo of the game?