Thank you - have reinstalled and it is all working now.
Could I just ask about the other problem I had - about the ShipFlat business:
I have added a column to the cart called ShipFlat and if the poster is a flat one I set the number to 1 otherwise it stays at 0
So, now I have to set up a shipping condition to click in if the ShipFlat is 1
Could you tell me what that condition should be - there are so many and I am getting a bit confused as to which one I should pick. At the moment I have the following added:
AND Number of items with a specific column value If the total number of items where ShipFlat has a value of 1 is = a value of >=1 (does that sound right?) also - do I need to put that condition in the shipping for those without the Flat rate, making the values 0?