Creating an .EXE problem.

Well guys ived been developing the game quite some time now, but not that fantastic though.

I had some errors while playing it on unity3d but it's playable when I play.

Here's the problem. When I make the .Exe of it, it doesn't work. It doesn't move at all but when I am in the Unity3d interface when I press play. It plays.

What is the solution/ problem here? Thank you guys in advance.

The only think I can think of is that you have the wrong scene in your build settings.

EDIT: Unity gets very touchy when renaming applications, changing the project name, build name, etc.

Could be something wrong with your hard-drive. Had a similar issue. I created a different named exe and it seemed to fix the issue, or as suggested above you are building the wrong scene.