Manager stopped working- page is always loading

Hi everybody,
The last week I was learning about Modx. But now I can’t get the manager page anymore. I can login and then it says something like: just a minute, Modx is loading the page. But nothing happens. The message stays there. I can still watch the testsite I made: www.jomedio.nl/modx/index.php
What can I do and why does this happen?

Stupid me! For something else I had scripting disabled in IE and that was the reason.
All solved now.