Lift Mapper OneToMany error

Publisher.scala

//Publisher.scala
package com.lshoo.liftinaction.model

import net.liftweb.mapper._
import net.liftweb.util.Helpers._
import com.lshoo.model.Book

class Publisher extends LongKeyedMapper[Publisher] 
		with CreatedUpdated with IdPK
		with OneToMany[Long, Publisher]{
  
	def getSingleton = Publisher
	
	object name extends MappedString(this, 200)
	object description extends MappedText(this)
	
	object books extends MappedOneToMany(Book, Book.publisher) 
}

object Publisher extends Publisher with LongKeyedMetaMapper[Publisher] {
    override def dbTableName = "publishers"
}
//end Publisher.scala

//Book.scala
package com.lshoo.model

import net.liftweb.mapper._
import net.liftweb.util.Helpers._

class Book extends LongKeyedMapper[Book] 
		with CreatedUpdated with IdPK
		{
  def getSingleton = Book
  
  object title extends MappedString(this, 200)
  object blurb extends MappedString(this, 200)
  object publishedOn extends MappedDate(this)
  
  object publisher extends MappedLongForeignKey(this, Publisher) {
    override def dbColumnName = "publisher_id"
  }

}

object Book extends Book with LongKeyedMetaMapper[Book] {
  override def dbTableName = "books"
  
}
在两个object publisher...和object books中eclipse报错。哪里写错了？

犯了低级错误，把其它项目的scala复制到当前项目中，但包没有改过来（Publisher.scala中package com.lshoo.liftinaction.model),去掉liftinaction即可。