Upgrade from Jinit to JRE 1.6.0_26 - Cannot access to forms

Hi,
After applied the patches from note 290807.1 in order to upgrade to JRE, cannot access to forms - a blank window appears.
The java console shows the message below
--
Java Plug-in 1.6.0_26
Using JRE version 1.6.0_26-b03 Java HotSpot(TM) Client VM


connectMode=Socket
serverHost=lisoap01.bss.zapp.pt
serverPort=9000
A versão do Forms Applet é: 60828
java.lang.NoSuchMethodError: oracle.forms.handler.IHandler.getApplet()Loracle/forms/engine/Main;
    at oracle.forms.ui.VTextField.init(Unknown Source)
    at oracle.forms.handler.UICommon.instantiate(Unknown Source)
    at oracle.forms.handler.UICommon.onCreate(Unknown Source)
    at oracle.forms.handler.TextFieldItem.onCreate(Unknown Source)
    at oracle.forms.engine.Runform.onCreateHandler(Unknown Source)