Locking SWF to domain issue

Hey all,

I’m currently trying to do this tutorial … http://active.tutsplus.com/tutorials/actionscript/quick-tip-lock-your-swf-to-a-specific-domain-name/

Only issue is that no matter what I do I’m getting the error that the SWF is not on the correct domain name. I’ve changed the domain name to dicehunters.co.uk which should work?