Server Error after making PayPal payment

[adamdp]

After making the payment on PayPal my customers are being redirected back to "coolvape.co.uk/module/paypal/submit?key=e0da844a48fefbb76e8e5f436ad14398&id_module=111&id_cart=425&id_order=128" a page that returns Error 500 Internal Server Error. The order goes through fine, and I get the payment, but the customer never gets an order summary, leading to several of them making a second duplicate order thinking the payment didn't go through.

 

I have already disabled express checkout because it redirected back to the site when you tried to make payment on PayPal.

 

Thanks for any help, Adam

Edited April 14, 2013 by adamdp (see edit history)

[V]

I know this is late but hoping it will help someone else. The fix is simple /modules/paypal --> find the folder --> express_checkout -->change permissions to 755 and recurse. I have been searching for a solution for a while.