My Magento 1.93 store is having problems on the Checkout page when a user is logged in. No problem with guest checkouts.
...I get a 500 Error which is difficult to debug. I cannot find any errors listed in /app/log/system.log or exception.log.
Does anyone know of a fix, or how I can debug the problem?
Thanks in advance
Solved! Go to Solution.
Update: Checking out as guest also gives a blank screen but only if the Customer has previously logged in. Even if they log out and checkout as guest.