Bet youre getting fed up of answering me

Right, what the problem is this time is that I cannot get shipping working. I want it to change depending on the weight.
I have added UK to the Locations, with the Zones. I have enabled Royal Mail and Weight Based Shipping shipping but when I do a test for Checkout it just displays "Error: No Shipping options are available. Please contact us for assistance!"
Everything is set to Location: UK and it is all Enabled
I have PayPal set to Location: UK and that shows fine. But its just the shipping that doesnt.
I dont know where I am going wrong.
Please help me
