Hi, ok this is my first posti had this problem earlier today and after several hours of playing with the .php etc i worked out that the answer is in the shipping generator readme file.
after you have decided what shipping modules you want to use (I see you have chosen royal mail) you need to
1) go to "http://YOURSITE.com/shop/googlecheckout/shipping_generator/
2) Click the 'Get shipping Methods' button
3)Move down the page and than click generate.
4) than copy the code generated and use it to replace the contents of shipping_methods.php
this will fix your problem.
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