Site2Site with Checkpoint Edge 8.2.50

Hi,

I'm trying to establish a site2site vpn between an ASG V9 and Checkpoint Edge V8.2.50 device.

I'm able to establish the VPN, I can ping and transmit data, but at every minute, the Checkpoint will reset the tunnel saying
Failed to establish VPN tunnel: invalid id information "IP OF ASG WAN"

As anyone been able to make to 2 device work together?

Thank
ML