I was working this afternoon in my project without problems. Before come home I did a commit to my svn to continues it in home, but now when I try to run it shows a code error that hadn't shown before. The Following code it's supposed to initiate new scene using controllers and passing parameters. Error:

Someone knows what is happening? If you say "The code is wrong" it's not possible cause I was using the exactily same code in my work.
Detail, in the afternoon i was using Mac OS and now I'm using Windows. And IDE is Netbeans in booth places
LoginController controller = (LoginController) loader.getController(), though I wonder why it is necessary as Java correctly infers the type without a cast for me.