securesocialのsampleでエラー play2.1.5

gistfile1.txt

[info] application - [securesocial] loaded templates plugin: securesocial.controllers.DefaultTemplatesPlugin
[info] play - Starting application default Akka system.
[info] application - [securesocial] loaded user service: class services.MyUserService
[info] application - [securesocial] loaded identity provider: facebook
[info] play - Application started (Dev)
[debug] application - [securesocial] calling deleteExpiredTokens()
[debug] application - [securesocial] bootstrap path = securesocial/bootstrap/css/bootstrap.min.css
[debug] application - [securesocial] assets controller = controllers.ReverseAssets
[debug] application - [securesocial] favicon path = securesocial/images/favicon.png
[debug] application - [securesocial] Jquery path = securesocial/javascripts/jquery-1.7.1.min.js
[debug] application - [securesocial] custom css path = None
[error] application - [securesocial] can't find provider for id userpass
[debug] application - [securesocial] authorizationUrl = https://graph.facebook.com/oauth/authorize
[debug] application - [securesocial] redirecting to: [https://graph.facebook.com/oauth/authorize?scope=email&client_id=1393526614254357&redirect_uri=http%3A%2F%2Flocalhost%3A9000%2Fauthenticate%2Ffacebook&response_type=code&state=f6844a71-e69c-4c03-9f42-29940df62e46]

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[error] application - Unable to log user in. An exception was thrown
java.lang.RuntimeException: class securesocial.core.IdGenerator plugin should be available at this point
	at com.typesafe.plugin.package$$anonfun$use$1.apply(package.scala:13) ~[play-plugins-util_2.10-2.1.0.jar:2.1.0]
	at com.typesafe.plugin.package$$anonfun$use$1.apply(package.scala:13) ~[play-plugins-util_2.10-2.1.0.jar:2.1.0]
	at scala.Option.getOrElse(Option.scala:120) [scala-library.jar:na]
	at com.typesafe.plugin.package$.use(package.scala:13) ~[play-plugins-util_2.10-2.1.0.jar:2.1.0]
	at securesocial.core.Authenticator$.create(Authenticator.scala:211) ~[securesocial_2.10-2.1.1.jar:2.1.1]
	at securesocial.controllers.ProviderController$.completeAuthentication(ProviderController.scala:115) ~[securesocial_2.10-2.1.1.jar:2.1.1]
[error] application - [securesocial] can't find provider for id userpass