在Javafx 1.x（1.2和1.3.1）中使用Scala 2.8.x（2.8.0和2.8.1）時出現錯誤的類文件錯誤

cannot access scala.Option.$anonfun$orNull$1 bad class file: scala/Option$$anonfunorNull1.class(scala:Option$$anonfun$orNull\$1.class)
undeclared type variable: A1
Please remove or make sure it appears in the correct subdirectory of the classpath.
import scala.Option;


Later edit: The same error is reported in case I import scala.immutable.Seq/List/Traversable/Iterable . I have tried the imports in a default Netbeans 6.9.1 JavaFX project which has in the classpath only scala-library.jar.