Cisco 851w site-to-site

Hi,
I am trying to create a site-to-site IPSEC tunnel with my 851w to a PIX. When I try to test the tunnel I receive the error : ” peer must be routed through crypto map interface ”

My WAN interface is unsuccessful in its test connections as well, although I can ping and traceroute from the CLI.

I do have a static route forwarding to the wan interface.

Any suggestions ?
Thank in advance