No keyboard input in play mode

I am having the exact same problem as the thread here -

http://answers.unity3d.com/answers/656400/view.html

…with the exact same tutorial.

(I thought I should start a new thread, since that one was marked as answered.)

All my property boxes, input manager etc. look exactly the same as the screenshots posted except my IsKinetic box is unchecked. Also my constraints are all unchecked.

I found the problem. (Sorry.) For any other dumb schmuck like me, I just had fixedupdate() in the script when it should have been FixedUpdate().

(In fact one of the answers did sort of refer to that. (Sorry again!))