The installer deletes the following files from the %JBOSS_HOME%/client folder:

client/jboss-annotations-ejb3.jar
client/jboss-ejb3-impl.jar
client/jboss-ejb3-client.jar
client/ejb3-persistence.jar
client/jboss-ejb3-impl-javadoc.jar
client/jboss-ejb3-ext-api.jar
client/jboss-ejb3-core-client.jar
client/jboss-ejb3-proxy-client.jar
client/jboss-ejb3-proxy-clustered-client.jar
client/jboss-ejb3-security-client.jar

but copies back only:

jboss-ejb3-ext-api.jar
jboss-ejb3-common-client.jar
jboss-ejb3-core-client.jar
jboss-ejb3-proxy-client.jar
jboss-ejb3-proxy-clustered-client.jar
jboss-ejb3-security-client.jar
jboss-metadata.jar

1) The installer has references to unexistent jars:

client/jboss-annotations-ejb3.jar
client/jboss-ejb3-impl.jar
client/jboss-ejb3-client.jar
client/jboss-ejb3-impl-javadoc.jar

Need to see other such references to non-existent jar(s) and cleanup those references. Not very critical since those are just redundant references.

2) The installer deletes the client/ejb3-persistence.jar and does not recopy it. Since we don't do any changes to this jar, we shouldn't be deleting this. Fixing this is important since it breaks the client which rely on the presence of this jar in their classpath (either directly or through jbossall-client.jar). Till this is fixed, the workaround for the clients of this jar is to add %JBOSS_HOME%/common/lib/ejb3-persistence.jar to their classpath.