I use happstack-authenticate, but when I select facebook to login with, I get:

FacebookException {fbeType = " ()", fbeMessage = ""}

However, it seems well configured.

I put:

facebookAuth =
    Credentials {appName = "Nomyx",
                 appId = "161007670738608",
                 appSecret = <my secret>}

On the facebook website, I have the application configured:

application Id: 161007670738608

secret key: <my secret>
Display Name: Nomyx

Do you have any hints?

Thanks a lot!!