Quote Originally Posted by CoolCarPartsOnline View Post
I started having issues with IPN and EC after enabling the Free shipper module.

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This may narrow the issue down to Dr Byte. It seems that we both have the Free Shipper module enabled with multiple store zones.
Both of you,

Can you explain how you've got your Free Shipper module configured? Is it just set to the defaults of $0.00, $0.00, tax-class "none", and sort order "0", but with a zone assigned?
I'd like to try setting up my site to match what you're doing.
The details for the zone you've assigned will be important as well too.

And what other shipping modules do you have set up? And how are they configured? Do they have zones assigned? Do they have price restrictions of some sort on them which would limit whether they're available on certain purchases, like zones do?