BPMS installer fails

Issue

Using jboss-bpmsuite-6.4.0.GA-installer.jar installation always fail with:

{
    "outcome" => "failed",
    "failure-description" => "JBAS014749: Operation handler failed: org.jboss.as.server.services.security.VaultReaderException: org.jboss.security.vault.SecurityVaultException: java.lang.RuntimeException: PBOX000140: Unable to get keystore (/home/alberto/redhat/products/EAP-6.4.0/vault.keystore)",
    "rolled-back" => true,
    "command" => undefined
}