I didn't have any problems using the 2 x WarpEngine boards I have had (still have one of them, and still no problems :-)). Plug it in and of you go. But doesn't the seller state that he have tried to use the card in his A4000 but didn't got it to run?
I remember the auction the seller originally got it from, and I remember the board layout being a bit odd compared to the two boards I had.
