Problem using Auto Generated Task Form with Autogenerated ADF controls

Sorry bothering you again, but I'm in troubles again.
I'm using an autogenerated page for a human task with adf controls. Generates fine, it's deployed in App Server and runs Ok, buth when you try to see the form, you get this error:
500 Internal Server Error
Servlet error: Security sensitive exception occured. Please consult application log for details.
And in the log, I got:
oracle.classloader.util.AnnotatedNoClassDefFoundError:
     Class not found:oracle.classloader.util.AnnotatedNoClassDefFoundError
     Dependet class: oracle.bpel.services.workflow.adfforms.BPELWFDCDef
     Loader: oracle.bpel.common:10.1.3
     Origen : /C:/programs/com/oracle/SOASuite/10.1.3.1/bpel/system/services/lib/bpm-services.jar
     Configuration: <code-source> in /C:/programs/com/oracle/SOASuite/10.1.3.1/j2ee/oc4j_soa/config/server.xml
Class can be found in:
     1. Code origen: /C:/programs/com/oracle/SOASuite/10.1.3.1/BC4J/jlib/adfui.jar (from <code-source> in /C:/programs/com/oracle/SOASuite/10.1.3.1/j2ee/oc4j_soa/config/server.xml)
     Este origen de código está disponible en el cargador adf.oracle.domain:10.1.3.
     Este origen de código está disponible en el cargador adf.generic.domain:10.1.3.
     2. Origen de Código: /C:/programs/com/oracle/SOASuite/10.1.3.1/BC4J/lib/adfm.jar (from <code-source> in /C:/programs/com/oracle/SOASuite/10.1.3.1/j2ee/oc4j_soa/config/server.xml)
     Este origen de código está disponible en el cargador adf.oracle.domain:10.1.3.
     Este origen de código está disponible en el cargador adf.generic.domain:10.1.3.
     at oracle.classloader.PolicyClassLoader.defineClass(PolicyClassLoader.java:2264)
     at oracle.classloader.PolicyClassLoader.findLocalClass(PolicyClassLoader.java:1462)
     at oracle.classloader.SearchPolicy$FindLocal.getClass(SearchPolicy.java:167)
     at oracle.classloader.SearchSequence.getClass(SearchSequence.java:119)
     at oracle.classloader.SearchPolicy.loadClass(SearchPolicy.java:645)
     at oracle.classloader.SearchPolicy$CheckSharedLibraries.getClass(SearchPolicy.java:396)
     at oracle.classloader.SearchSequence.getClass(SearchSequence.java:119)
     at oracle.classloader.PolicyClassLoader.internalLoadClass(PolicyClassLoader.java:1674)
     at oracle.classloader.PolicyClassLoader.loadClass(PolicyClassLoader.java:1635)
     at oracle.classloader.PolicyClassLoader.loadClass(PolicyClassLoader.java:1620)
     at java.lang.ClassLoader.loadClassInternal(ClassLoader.java:319)
     at java.lang.Class.forName0(Native Method)
     at java.lang.Class.forName(Class.java:242)
     at oracle.jbo.common.java2.JDK2ClassLoader.loadClassForName(JDK2ClassLoader.java:38)
     at oracle.jbo.common.JBOClass.forName(JBOClass.java:164)
     at oracle.adf.model.adapter.DataControlFactoryImpl.createSession(DataControlFactoryImpl.java:132)
     at oracle.adf.model.binding.DCDataControlReference.getDataControl(DCDataControlReference.java:76)
     at oracle.adf.model.BindingContext.get(BindingContext.java:457)
     at oracle.adf.model.binding.DCUtil.findSpelObject(DCUtil.java:280)
     at oracle.adf.model.binding.DCUtil.findSpelObject(DCUtil.java:248)
     at oracle.adf.model.binding.DCUtil.findContextObject(DCUtil.java:383)
     at oracle.adf.model.binding.DCIteratorBinding.<init>(DCIteratorBinding.java:128)
     at oracle.jbo.uicli.binding.JUIteratorBinding.<init>(JUIteratorBinding.java:60)
     at oracle.jbo.uicli.binding.JUMethodIteratorDef$JUMethodIteratorBinding.<init>(JUMethodIteratorDef.java:138)
     at oracle.jbo.uicli.binding.JUMethodIteratorDef.createIterBinding(JUMethodIteratorDef.java:93)
     at oracle.jbo.uicli.binding.JUMethodIteratorDef.createIterBinding(JUMethodIteratorDef.java:84)
     at oracle.adf.model.binding.DCIteratorBindingDef.createExecutableBinding(DCIteratorBindingDef.java:277)
     at oracle.adf.model.binding.DCBindingContainerDef.createExecutables(DCBindingContainerDef.java:296)
     at oracle.adf.model.binding.DCBindingContainerDef.createBindingContainer(DCBindingContainerDef.java:425)
     at oracle.adf.model.binding.DCBindingContainerReference.createBindingContainer(DCBindingContainerReference.java:54)
     at oracle.adf.model.binding.DCBindingContainerReference.getBindingContainer(DCBindingContainerReference.java:44)
     at oracle.adf.model.BindingContext.get(BindingContext.java:483)
     at oracle.adf.model.BindingContext.findBindingContainer(BindingContext.java:313)
     at oracle.adf.model.BindingContext.findBindingContainerByPath(BindingContext.java:633)
     at oracle.adf.model.BindingRequestHandler.isPageViewable(BindingRequestHandler.java:261)
     at oracle.adf.model.BindingRequestHandler.beginRequest(BindingRequestHandler.java:165)
     at oracle.adf.model.servlet.ADFBindingFilter.doFilter(ADFBindingFilter.java:178)
     at com.evermind[Oracle Containers for J2EE 10g (10.1.3.1.0) ].server.http.ServletRequestDispatcher.invoke(ServletRequestDispatcher.java:619)
     at com.evermind[Oracle Containers for J2EE 10g (10.1.3.1.0) ].server.http.ServletRequestDispatcher.forwardInternal(ServletRequestDispatcher.java:368)
     at com.evermind[Oracle Containers for J2EE 10g (10.1.3.1.0) ].server.http.HttpRequestHandler.doProcessRequest(HttpRequestHandler.java:866)
     at com.evermind[Oracle Containers for J2EE 10g (10.1.3.1.0) ].server.http.HttpRequestHandler.processRequest(HttpRequestHandler.java:448)
     at com.evermind[Oracle Containers for J2EE 10g (10.1.3.1.0) ].server.http.AJPRequestHandler.run(AJPRequestHandler.java:302)
     at com.evermind[Oracle Containers for J2EE 10g (10.1.3.1.0) ].server.http.AJPRequestHandler.run(AJPRequestHandler.java:190)
     at oracle.oc4j.network.ServerSocketReadHandler$SafeRunnable.run(ServerSocketReadHandler.java:260)
     at com.evermind[Oracle Containers for J2EE 10g (10.1.3.1.0) ].util.ReleasableResourcePooledExecutor$MyWorker.run(ReleasableResourcePooledExecutor.java:303)
     at java.lang.Thread.run(Thread.java:595)
There is something I must add?

See if this helps -
https://forums.oracle.com/thread/2460140

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    Hi hardikvaishnav,
    This is a known issue which has been reported to Microsoft Connect. Unfortunately, this issue will not fix due to stability issues around MDI. For more details, see 
    https://connect.microsoft.com/VisualStudio/feedback/details/97787/border-of-mdi-child-form-flashes-up-despite-formborderstyle-none.
    You might use a user control or panel instead.
    Best Regards,
    Bob Wu [MSFT]
    MSDN Community Support | Feedback to us

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