Cossing The Sands Patched

This patch solves a couple issues caused by the big update and adds rendering of shadows. [list] [*] Fixed a problem that could cause a new game not to start when selected from the main menu. [*] Fixed textures for some mushroom models in the game. [*] Fixed an issue that could prevent being able to sell items in a shop. [*] Added shadows to the game. You'll see objects like trees, rocks, and buildings casting shadows now. [/list]