Problem Genoil-ZEC-miner on Dwarpool

Hello,

I mined with Genoil-ZEC-Miner unit end 2016 and i restart mining today.
But i have a problem.
I have a error message : zconn exception in : invalid string position.
Link screenshot : http://nsa37.casimages.com/img/2017/03/04/mini_170304085535335565.jpg

Have you an idea ?

Sorry for my english.

Thank's in advance

link screenshot : http://nsa37.casimages.com/img/2017/03/04/170304085535335565.jpg