Recently I have upgrade my Magento store from 1.3 to 1.8. I fixed almost errors. Now am facing a strange issue in the last step of the check out. When I click the place order button I get an undefined alert and nothing happens after that.
Somebody told me to alert transport.responseText on skin/design/frontend/package/theme/js/opcheckout.js
to show the errors.
But I can't get any error in this alert. It just contains an html code of the check out page.
Anybody know what is the issue here.
Best Answer
Find code
Replace it with:
Make sure to take file backup