2Checkout incorrect parameters?

[healthi]

Hi,
I just signed up for 2Checkout and enabled the module on my site.

I get the following when being transfered to there site:

"1
Parameter Error.


Incorrect parameters were supplied therefore this purchase cannot begin.

If you are attempting to purchase from a web site please contact the web site so that they can correct the error.

If you are designing your web site consult the 2Checkout.com Admin Area for the proper codes.

Thank You,
2Checkout.com Inc. "

Maybe I put the incorect details in the module setup?

What do I put in this section of the module?:
Login/Store Number
Login/Store Number used for the 2CheckOut service
123456(my merchant number?)


Help?
Thanks
Glenn

[dr4bedell]

Did you ever get a solution? I am having the same problem. Incorrect parameters on the 2checkout.com module