Error in OpenID Stateless Mode

[dev315]

When we use 'Stateless Mode', an error was occured.
(http://openid.net/specs/openid-authentication-2_0.html#check_auth)
Can anyone succeed in Stateless Mode ?

[Tue Apr 23 15:16:15 2013] [debug] mod_auth_openid.cpp(588): [client xx.211.169.106] *** mod_auth_openid 0.7 module has been called ***
[Tue Apr 23 15:16:15 2013] [mod_auth_openid] Request GET params: &modauthopenid.nonce=dOC6vQCtRJ&openid.mode=id_res&openid.claimed_id=http%%3A%%2F%%2Fweb.icewallcloud.com%%2Fuser01&openid.identity=http%%3A%%2F%%2Fweb.icewallcloud.com%%2Fu
ser01&openid.op_endpoint=http%%3A%%2F%%2Fweb.icewallcloud.com%%2Fiwop%%2Fendpoint&openid.return_to=http%%3A%%2F%%2Fweb.icewallcloud.com%%2Fcgi-bin%%2Fprintenv%%3F%%26modauthopenid.nonce%%3DdOC6vQCtRJ&openid.response_nonce=2013-04-23T06%%3
A16%%3A14Z0&openid.assoc_handle=EQBix8IkrNv9W3fWBxsF00pDrPqZf6ZJ&openid.ns=http%%3A%%2F%%2Fspecs.openid.net%%2Fauth%%2F2.0&openid.signed=op_endpoint%%2Cclaimed_id%%2Cidentity%%2Creturn_to%%2Cresponse_nonce%%2Cassoc_handle&openid.sig=aRa%%
2BmxzbKMgT7iDxEu5tYUl%%2BRpZqTapKeZRL7MaHY2o%%3D
[Tue Apr 23 15:16:15 2013] [debug] mod_auth_openid.cpp(609): [client xx.211.169.106] *** mod_auth_openid 0.7: openid.assoc_handle is exist ***
[Tue Apr 23 15:16:15 2013] [mod_auth_openid] looking up association: server = http://web.icewallcloud.com/iwop/endpoint handle = EQBix8IkrNv9W3fWBxsF00pDrPqZf6ZJ
[Tue Apr 23 15:16:15 2013] [mod_auth_openid] could not find server "http://web.icewallcloud.com/iwop/endpoint" and handle "EQBix8IkrNv9W3fWBxsF00pDrPqZf6ZJ" in db.
throwing exception("Could not find association.")
throwing exception("openid.openid.assoc_handle: no such field")
[Tue Apr 23 15:16:15 2013] [error] [client xx.211.169.106] Error in authentication: openid.openid.assoc_handle: no such field