Chose "Seam 2.2 Booking Example - Ear (including a tutorial)" shows a great cheat sheet but the actions in there fails with IllegalArgumentExceptions and there seem to be missing links for large sections of the tutorial ?

java.lang.IllegalArgumentException
at org.eclipse.ui.part.FileEditorInput.getPath(FileEditorInput.java:208)
at org.eclipse.ui.internal.EditorManager.openEditorFromDescriptor(EditorManager.java:662)
at org.eclipse.ui.internal.EditorManager.openEditor(EditorManager.java:638)
at org.eclipse.ui.internal.WorkbenchPage.busyOpenEditorBatched(WorkbenchPage.java:2860)
at org.eclipse.ui.internal.WorkbenchPage.busyOpenEditor(WorkbenchPage.java:2768)
at org.eclipse.ui.internal.WorkbenchPage.access$11(WorkbenchPage.java:2760)
at org.eclipse.ui.internal.WorkbenchPage$10.run(WorkbenchPage.java:2711)
at org.eclipse.swt.custom.BusyIndicator.showWhile(BusyIndicator.java:70)
at org.eclipse.ui.internal.WorkbenchPage.openEditor(WorkbenchPage.java:2707)
at org.eclipse.ui.internal.WorkbenchPage.openEditor(WorkbenchPage.java:2691)
at org.eclipse.ui.internal.WorkbenchPage.openEditor(WorkbenchPage.java:2682)
at org.eclipse.ui.ide.IDE.openEditor(IDE.java:651)
at org.eclipse.ui.ide.IDE.openEditor(IDE.java:610)
at org.jboss.tools.project.examples.cheatsheet.actions.Ope