Hi I've got the same problem like Rasuyom, Mirko.Tikalsky.
1. win2k SP4 2. java version "1.5.0_02" Java(TM) 2 Runtime Environment, Standard Edition (build 1.5.0_ Java HotSpot(TM) Client VM (build 1.5.0_02-b09, mixed mode) and JAVA_HOME =.../jdk 3. jboss-4.0.3SP1-installer.jar 4. java -jar jboss-4.0.3SP1-installer.jar and - Error - java.lang.NullPointerException java.lang.NullPointerException at java.io.ObjectInputStream$PeekInputStream.read(ObjectInputStream.java :2217) at java.io.ObjectInputStream$PeekInputStream.readFully(ObjectInputStream .java:2230) at java.io.ObjectInputStream$BlockDataInputStream.readShort(ObjectInputS tream.java:2698) at java.io.ObjectInputStream.readStreamHeader(ObjectInputStream.java:750 ) at java.io.ObjectInputStream.(ObjectInputStream.java:268) at com.izforge.izpack.installer.InstallerBase.loadInstallData(InstallerB ase.java:89) at com.izforge.izpack.installer.GUIInstaller.(GUIInstaller.java:10 2) at sun.reflect.NativeConstructorAccessorImpl.newInstance0(Native Method) at sun.reflect.NativeConstructorAccessorImpl.newInstance(NativeConstruct orAccessorImpl.java:39) at sun.reflect.DelegatingConstructorAccessorImpl.newInstance(DelegatingC onstructorAccessorImpl.java:27) at java.lang.reflect.Constructor.newInstance(Constructor.java:494) at java.lang.Class.newInstance0(Class.java:350) at java.lang.Class.newInstance(Class.java:303) at com.izforge.izpack.installer.Installer.main(Installer.java:53) Any solution? View the original post : http://www.jboss.com/index.html?module=bb&op=viewtopic&p=3910801#3910801 Reply to the post : http://www.jboss.com/index.html?module=bb&op=posting&mode=reply&p=3910801 ------------------------------------------------------- This SF.net email is sponsored by: Splunk Inc. Do you grep through log files for problems? Stop! Download the new AJAX search engine that makes searching your log files as easy as surfing the web. DOWNLOAD SPLUNK! http://ads.osdn.com/?ad_id=7637&alloc_id=16865&op=click _______________________________________________ JBoss-user mailing list JBoss-user@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/jboss-user