Quote Originally Posted by DrByte View Post
Zen Cart v1.2.7 doesn't have Express Checkout support, but you're quoting what looks like an Express Checkout error.
So, it sounds like you've stuffed in some files from a newer version of Zen Cart. But, that won't work. Either upgrade fully, or remove the Express Checkout option altogether.
Wait! Sorry, I just realised that the error you are talking about comes from the curltest.php file that I found on these forums, which I believe does it's tests independant of the ZenCart installation, so the installation of Zen Cart isn't necessarily trying to use PayPal Express (in fact I know it isn't as nothing has been touched with the installation in a long time, this problem started occuring when the installation was moved to a new server).

Is there any more debugging that I can do to my installation to attempt to find out what is wrong?