The program doesn't let me use my hands when playing. It is like they have been disabled.

When the game loads, it doesn't give me the option to use my hands.  I try and pressing the right and left click, but I get nothing.  Another thing I notice is the player goes through the ground and flies and there is no interaction between me and the live creatures around me.  I can't even land on the ground.  He just goes straight through the ground.