If you are trying to create a SpeedFusion VPN tunnel and an IPsec tunnel to the same exact remote subnet this will not work.
Actually, there should be no need to do this. SpeedFusion is far superior to IPsec because it provides session persistence. With IPsec your tunnel will break if the WAN connection it is going across fails. This will not happen using SpeedFusion with 2 or more WAN’s.
You should consider using SpeedFusion instead of IPsec, the benefits are huge.
http://www.peplink.com/knowledgebase/why-use-peplink-speedfusion-instead-of-ipsec-vpn/