Amazon cloud VPN errors

Hey guys,

I've been looking into this error we keep getting on our VPN tunnel to Amazon cloud, but im not getting any further.

Message meets Alert condition date=2015-11-27 time=12:39:27 devname=FW10018 devid=FGT90DSERIAL logid=0101037130 type=event subtype=vpn level=error vd="root" logdesc="Progress IPsec phase 2" msg="progress IPsec phase 2" action=negotiate remip=52.x.x.x locip=213.x.x.x remport=500 locport=500 outintf="wan1" cookies="0caac---------------644" user="N/A" group="N/A" xauthuser="N/A" xauthgroup="N/A" assignip=N/A vpntunnel="VPN-ZIMPA" status=failure init=remote mode=quick dir=inbound stage=1 role=responder result=ERROR  

Any idea where this is comming from?

The setup:

phase1-interface

   edit "VPNAMAZON"
        set interface "wan1"
        set nattraversal disable
        set keylife 28800
        set proposal aes128-sha1
        set localid "ourlocalid"
        set comments "Amazon-IKE-vpn"
        set dhgrp 2
        set remote-gw 52.x.x.x
        set psksecret ENC supersecret

phase2-interface

    edit "VPNAMAZON"
        set phase1name "VPNAMAZON"
        set proposal aes128-sha1
        set dhgrp 2
        set keepalive enable
        set keylifeseconds 3600
        set src-subnet 10.x.x.x 255.255.254.0
        set dst-subnet 172.x.x.x 255.255.0.0

I tried enabling dpd but that doesn't take. It's not comming up in the config?

Though, in the GUI i do see it.

Hope anyone can help out with this.

(edit: to many spaces lol)