fck_startup.js never stops loading, pls help!

I have set all the required information correctly. I have then tried to run my code and found out that the editor doesn't show. This, because it keeps loading it says. But it never stops loading thats my problem, so I tried to pin-point the exact problem and came to this line in fckeditor.html:

<script type="text/javascript" src="js/fck_startup.js"></script>

If I comment this line, all works fine, but I'm not seeing the editor. If I uncomment it, the page just loads and loads for ever. It actually never stops loading. I don't know what this could be since I'm not an expert on JavaScript, so could someone please help me with this one?

I'm begging on my bare knees.