Prestashop (pagos)

[Webs_DS]

Hola buenas tardes..
Estoy ahora en el mundillo de comercio electrónico, y estoy con el Prestashop, el problemilla que tengo es que cuando "pruebo" a pagar con 'transferencia bancaria' me sale este error:

Internal Server Error

The server encountered an internal error or misconfiguration and was unable to complete your request.

Please contact the server administrator, webmaster and inform them of the time the error occurred, and anything you might have done that may have caused the error.

More information about this error may be available in the server error log.

Additionally, a 404 Not Found error was encountered while trying to use an ErrorDocument to handle the request.



Soy nuevo en esto,, seguro que es alguna cosilla.. Gracias!!