Getting a 10002 Error for PayPal Express

[DrByte]

"We are sorry for the inconvenience. The PayPal account in this store is presently misconfigured to use mixed sandbox and live settings. We are unable to complete your transaction. Please notify the store owner so they can correct this problem. (10002)"

This is a result of several possible situations:
1. You have entered API credentials for a sandbox account but have set it to "live" mode.
2. or vice-versa
3. A typo in what you entered (but you said you're sure there's not)
4. Something wrong with your PayPal account

Also, it seems you're not using Zen Cart v1.3.8 (based on the wording of the message). Which version are you actually using? v1.3.7 has some bugs that were fixed in 1.3.7.1. Additional fixes and improvements were made in 1.3.8.

Additionally, if you turn on debug logging, the PayPal_xxxx_CURL.log file generated when the error happens should give you more details about exactly what PayPal is saying about the cause. http://www.zen-cart.com/forum/showthread.php?t=61199

[Dreameffects]

Hi,
Thank you for your reply.

I have version 1.3.7 installed (I used the automated install from Godaddy, probably a bad idea). I did reinstall the patches for PayPal express though.

I think the problem might be, as you suggested, in the Sandbox settings. I will check that and hopefully that will work.

Thanks again