1) Help -> Project Examples... -> Seam -> Seam 2.2 DVD Store Example - EAR (including a test project);
2) Expand "dvdstore22-ejb" folder
3) Right click on "Jboss Enterprise Application Platform 5.x runtime .." -> Properties
4) in the opened window "Properties for Jboss Enterprise Application Platform ..." click on "Classpath Container"
There is no error in the log, but the Error dialog (with the message: "The currently displayed page contains invalid values" will pop out.
The dialog results because the ClasspathContainerPreferencePage returns false from PreferenceDialog.isCurrentPageValid( ).