when I try to save an order, on the last step of onestepcheckout, firebug returns a 500 error and in log file I find the errors I attached to this issue. I\’d say
Undefined class constant \'ENTITY\' in /var/www/html/testingshop_dev/app/code/core/Mage/Sales/Model/Resource/Quote.php on line 152, referer: https://dev.testingshop.de/checkout/onepage/
is the most important.
For testing we use prepayment, so that no payment provider is needed.
I did an upgrade via overwriting all not-needed files (all but own templates and own skin). Everything else works fine (except the Issue I described before ).
Many thanks for this thread. I experienced this exact problem (’undefined’ popup in Magento checkout after upgrade) and solved it by renaming the ‘app/code/local/Mage/Sales/Model/Order.php’ that I found to ensure that it was no longer picked up and that core Magento ‘Order.php’ module would be used.
There is obviously a question as to why this particular site was overriding that file in the first place, but this then just needs to be looked into.