Hi!

My name is Juan Pablo Conte... live in Argentina... i have a zencart store and i need resolve the same problem like you had after (sorry for my bad english).

i dont know how set all parameters in 2checkout "site manager" section....
2checkout support tell me... you must set Direct Return....
but nothing happen.

my store is http://www.icaz2014argentina.com.ar

Can you help me?

thank you!