Play! framework 2.0 scala - ClassCastException: models.MyModel cannot be dropped in models.MyModel

This is my first 2.0 playback app, and scala is still pretty new to me, so I'm probably wrong. I use a fairly new plugin that connects Salat and Casbah: https://github.com/leon/play-salat

I simplified and renamed everything to make it general.

My view ( views/MyController/search.scala.html):

@(modelList:List[models.MyModel])
@main(title = "Search MyModel") {
  <table>
  @for(a <- modelList) {
    <tr><td>@a.field<td>@a.field2</li>
  } 
  </table>
}

My controller ( controllers/MyController.scala):

package controllers

import play.api._
import play.api.mvc._
import play.api.data._
import play.api.data.Forms._
import com.mongodb.casbah.Imports._
import models._

object MyController extends Controller {
  def search = Action {
    val modelList = MyModel.all.toList;
    Ok(views.html.MyController.search(modelList))
  }
}

My model: ( models/MyModel.scala):

package models

import play.api.Play.current
import java.util.{Date}
import com.novus.salat._
import com.mongodb.casbah.Imports._
import se.radley.plugin.mongodb._
import se.radley.plugin.mongodb.salat._

case class MyModel(
  id: ObjectId = new ObjectId,
  field: String,
  field2: String
)

object MyModel extends SalatDAO[MyModel, ObjectId](collection = getCollection("mycollection")) {
  def all = find(MongoDBObject())
}

And I get this error:

ClassCastException: models.MyModel cannot be cast to models.MyModel

Which doesn't make much sense to me - does anyone come across something like this?

Full stack trace:

play.core.ActionInvoker$$anonfun$receive$1$$anon$1: Execution exception [[ClassCastException: models.MyModel cannot be cast to models.MyModel]]
at play.core.ActionInvoker$$anonfun$receive$1.apply(Invoker.scala:82) [play_2.9.1.jar:2.0]
at play.core.ActionInvoker$$anonfun$receive$1.apply(Invoker.scala:63) [play_2.9.1.jar:2.0]
at akka.actor.Actor$class.apply(Actor.scala:290) [akka-actor.jar:2.0]
at play.core.ActionInvoker.apply(Invoker.scala:61) [play_2.9.1.jar:2.0]
at akka.actor.ActorCell.invoke(ActorCell.scala:617) [akka-actor.jar:2.0]
at akka.dispatch.Mailbox.processMailbox(Mailbox.scala:179) [akka-actor.jar:2.0]
Caused by: java.lang.ClassCastException: models.MyModel cannot be cast to models.MyModel
at views.html.MyController.search$$anonfun$apply$1.apply(search.template.scala:25) ~[classes/:na]
at scala.collection.TraversableLike$$anonfun$map$1.apply(TraversableLike.scala:194) ~[scala-library.jar:0.11.2]
at scala.collection.TraversableLike$$anonfun$map$1.apply(TraversableLike.scala:194) ~[scala-library.jar:0.11.2]
at scala.collection.LinearSeqOptimized$class.foreach(LinearSeqOptimized.scala:59) ~[scala-library.jar:0.11.2]
at scala.collection.immutable.List.foreach(List.scala:45) ~[scala-library.jar:0.11.2]
at scala.collection.TraversableLike$class.map(TraversableLike.scala:194) ~[scala-library.jar:0.11.2]