Shadows not working.

Hello i been trying to make a simple to use minecraft character and block for some time and it been tricky getting all the bugs fixed. now im finally almost there unfortunately the last bug is one im having no luck with. for some reason Shadows are not showing in my scene and i believe it may have something to do with texture mapping or something. please can someone have a look and see if you can figure it out.
Thanks.
https://dl.dropboxusercontent.com/u/189120588/Minecraft.zip

Sorry this is SOLVED Ray Shadows was not enabled on lighting by default as it normally is …

You have only one lamp (sun) and that has shadows turned off.