Error installing LC ES3 SP2

Hi,

We have a error installing LiveCycle ES3 SP2 on Linux RedHat Enterprise 5.5. Please, could someone help us?

This is the end of stack error:

..... at com.zerog.ia.installer.AAMgrBase.e(DashoA10*..)

        at com.zerog.ia.installer.AAMgrBase.n(DashoA10*..)

        at com.zerog.ia.installer.ConsoleBasedAAMgr.a(DashoA10*..)

        at com.zerog.ia.installer.AAMgrBase.e(DashoA10*..)

        at com.zerog.ia.installer.AAMgrBase.n(DashoA10*..)

        at com.zerog.ia.installer.ConsoleBasedAAMgr.a(DashoA10*..)

        at com.zerog.ia.installer.AAMgrBase.m(DashoA10*..)

        at com.zerog.ia.installer.LifeCycleManager.b(DashoA10*..)

        at com.zerog.ia.installer.LifeCycleManager.a(DashoA10*..)

        at com.zerog.ia.installer.Main.main(DashoA10*..)

        at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)

        at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:60)

        at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:37)

        at java.lang.reflect.Method.invoke(Method.java:611)

        at com.zerog.lax.LAX.launch(DashoA10*..)

        at com.zerog.lax.LAX.main(DashoA10*..)

     This Application has Unexpectedly Quit: Invocation of this Java Application has caused an InvocationTargetException. This application will now exit. (LAX)

Thanks