Shopping Cart Price Rules – “Coupon code “coupon_name” is not valid.” error
Hi!
I’m using Magento ver. 1.5.0.1 with a custom template and I keep getting a “Coupon code “coupon_name” is not valid each time I enter one of the Coupons I create in the Shopping Cart Price Rules. A coupon code created on April 13th works, but all others are throwing the error.
I’ve tried disabling core Magento modules and generating a new code. I’ve also deactivated extensions one at a time that were installed after April 13th via changing their <active> status from true to false in their respective xml files located in /public_html/app/etc/modules, flushing Magento cache, & creating a new coupon. I disabled 9 in all. (Side note: Along the way I also notice that after disabling “Fooman_Speedster” clicking on the submit button, get a quote button & add to cart buttons stopped working. Not sure why that was.)
That first code we generated continues to work, freesihp1, I tried disabling it to see if another one would start working in its place, no go.
I tried to go back and create another coupon that mirrored the settings exactly of the working coupon, to no avail.
I have over ten coupons now. I wondered if the priority had anything to do with it since they were all set to 0, so I changed one to 1 and tried it out, nothing.
Could it be that it doesn’t like more than one coupon? What could we have done to change the ability of Magento to create a working coupon?
Please help! 
