Hi there,

I just switched to seam 1.1.0 beta1 and started getting the following error messages when deploying my ear:

17:09:19,390 ERROR [[/foo]] Exception sending context initialized event to listener instance of class org.jboss.seam.servlet.SeamListener
java.lang.NullPointerException
 at java.io.FilterInputStream.close(FilterInputStream.java:159)
 at org.jboss.seam.deployment.Scanner.getClassFile(Scanner.java:175)
 at org.jboss.seam.deployment.Scanner.handleItem(Scanner.java:143)
 at org.jboss.seam.deployment.Scanner.handleDirectory(Scanner.java:131)
 at org.jboss.seam.deployment.Scanner.handleDirectory(Scanner.java:127)
 at org.jboss.seam.deployment.Scanner.handleDirectory(Scanner.java:127)
 at org.jboss.seam.deployment.Scanner.handleDirectory(Scanner.java:127)
 at org.jboss.seam.deployment.Scanner.handleDirectory(Scanner.java:127)
 at org.jboss.seam.deployment.Scanner.handleDirectory(Scanner.java:127)
 at org.jboss.seam.deployment.Scanner.getClasses(Scanner.java:90)
 at org.jboss.seam.init.Initialization.addComponents(Initialization.java:500)

Funny enough it was only me getting this error. We are three people on the project and the other two could deploy just fine. Initially we couldn't figure out any difference, but then we realized that I was running jdk1.5.0_05 whereas they were running jdk1.5.0_08.
I've installed the latest jdk 1.5 which is jdk1.5.0_09. My problem disappeared right away.

I hope this post will ave a few people some tedious debugging hours.

Cheers
Hardy