Hi Virginia:
I have been unable to open up that doc and look at the page you indicated.
It sounds like you are having trouble running; what is usually the case here is that people fail to include the net.refractions.udig.tutorials.customapp plugin in their run configuration (and thus it is not available to run).
The warning about loadKakadu is expected (and not related) it refers to some of the advanced image formats.
                Can you try something?
1. open up your run configuration
2. hit validate
3. Tell me if it comes back with any warnings about missing plugins?
4. You can hit "add required plugins"; however the real solution is to update the feature definitions to include the plugins that were missing.
Can I also ask what version of eclipse and udig you are using ...
-- 
Jody Garnett
                
                
                On Thursday, 12 May 2011 at 2:08 AM, Virginia Padilla wrote:
                
                    
    Hi,
    
    I am new into Udig. I have completed Tool Plugin, workbench
    selection and RCP tutorial without inconvenient. 
    I am trying  to follow the  Custom RCP Application tutorial. But , I
    can not do it.
    
    I've followed step by step the instruction about it, but 
in section 13,
      page 27, when I try
      to test it,
      nothing happens.
    What is wrong? This is the output.
    
    
 I think
      I missed something.
    Thank you very much for your help.
    
    
    Best wishes,
    
    
    Virginia. 
    
    
11/05/2011 11:37:04 AM it.geosolutions.util.KakaduUtilities
      loadKakadu
      ADVERTENCIA: Failed to load the Kakadu native libs. This is not a
      problem unless you need to use the Kakadu plugin: it won't be
      enabled. java.lang.UnsatisfiedLinkError: no kdu_jni in
      java.library.path
      !SESSION 2011-05-11 11:36:58.861
      -----------------------------------------------
      eclipse.buildId=unknown
      java.version=1.6.0_17
      java.vendor=Sun Microsystems Inc.
      BootLoader constants: OS=win32, ARCH=x86, WS=win32, NL=es_VE
      Framework arguments:  -product
      net.refractions.udig.tutorials.customapp.custom
      Command-line arguments:  -product
      net.refractions.udig.tutorials.customapp.custom -data
      C:\java\workspace/../runtime-custom.product -dev
      file:C:/java/workspace/.metadata/.plugins/org.eclipse.pde.core/custom.product/dev.properties
      -os win32 -ws win32 -arch x86 -consoleLog
      
      !ENTRY net.refractions.udig.ui 1 0 2011-05-11 11:37:04.507
      !MESSAGE Unable to parse version from about.mappings file.
      Defaulting to a blank string.