pledge and ipn problems with payment status completed

I have the following issue with the plugin:

when I make a payment in the IPN everything seems to be correct.

http response is 200 and

But no pledge is created.
I'm using simple donation fundraiser type in a live enviroment (not sandbox).

with the debug on in my wordpress i get no error which seem to be related whit the gateway.

I can manyally create pledge. Anyway I have this error in the pledge dashboard, on the 'Method' column.
I'm running wordpress 3.5.2 ( :slight_frown:
Notice: Undefined index: gateway_public in /var/www/ on line 1402