[Deque]

I'm trying it right away and will let you know, though, what did you mean with:

You can avoid crashes this and you get an error message.

? Maybe I'll avoid crashes when else I'd get an error message?

I am just saying that you should compile the script by hand before trying to log out and in again to see what happens. If the config doesn't compile, you will have problems then.

I thought your xmonad crashed.

Edit: If Haskell is the problem, you might as well try another tiling window manager, i.e. wmii or awesome