emacs not loading package via load-path

[Ferdinand]

Hi,

I would like to use ESS (emacs speaks statistics).
Therefore I put the ess-site.el in a directory that I added to the load-path 
variable in my .emacs file:

(add-to-list 'load-path "~/documents/emacs/load on startup/ess/lisp/")
(require ’ess-site)


This doesn't work. I get an error on startup (Symbol's value as variable is 
void: ’ess-site)
and I can't open an R session which tells me that the crucial .el file was not 
loaded.

When I load the ess-site.el manually or add this to .emacs:
(load "~/documents/sonstiges/emacs/load on startup/ess/lisp/ess-site.el")
it all works fine.

I don't have any other load-path things in my .emacs file.


So what am I doing wrong?

(I am using emacs 24.1 on mac OS X)


thanks for any help!