While installing EAP 7.4 using a installer, below NPE is encountered by multiple customers.

I see it is reproduced in one of the cases with below steps:

1. mkdir mytmp
2. chmod 444 mytmp

3. java -Djava.io.tmpdir=./mytmp -DDEBUG=true -DSTACKTRACE=true -DTRACE=true -jar jboss-eap-7.4.0-installer.jar -console

And it was suggested to customer to set correct permissions for /tmp or create custom tmp directory like above.

This solution has fixed issue for our local system.

But even after implementing the same, many customers faced the same issue.
I will link the cases in this JIRA request.

~~~
[ Starting to unpack ]
[ Processing package: Red Hat JBoss Enterprise Application Platform (1/5) ]
[ Processing package: AppClient (2/5) ]
[ Processing package: Docs (3/5) ]
[ Processing package: Modules (4/5) ]
[ Processing package: Welcome Content (5/5) ]
Exception in thread "IzPack - Unpacker thread" java.lang.ExceptionInInitializerError
at com.izforge.izpack.event.SummaryLoggerInstallerListener.afterPacks(SummaryLoggerInstallerListener.java:92)
at com.izforge.izpack.installer.UnpackerBase.informListeners(UnpackerBase.java:457)
at com.izforge.izpack.installer.Unpacker.run(Unpacker.java:497)
at java.lang.Thread.run(Thread.java:750)
Caused by: java.lang.NullPointerException
at com.izforge.izpack.util.SummaryProcessor.<clinit>(SummaryProcessor.java:66)
... 4 more
~~~