We have a modded site that uses the table rate module to give customers the option for free delivery when ordering over £150. All is fine with it when customers order using a debit/credit card or a credit account, however when they use paypal to purchase, and click the free delivery option. The database isnt being sent the postage selected, which then kicks up an error on our database.
We have another site which has the same thing and it is working fine! so completely at a loss.
Any ideas of where to look would be greatly appreciated!