Problem in compiling JDeveloper 11g R2 - package does not exist

I did a clean all to my application and now me thousand mistakes of references appear during the compilation, which could have failed?
Project: C:\JDeveloper\mywork\CentauroVirgen\CentauroWeb15\CentauroWeb15.jpr
C:\JDeveloper\mywork\CentauroVirgen\CentauroWeb15\src\com\bbog\centauro\controlador\servlet\administracion\ModificaProductosArchivoServlet.java
Error(23,39): package com.bbog.centauro.negocio.comun does not exist
Error(24,39): package com.bbog.centauro.negocio.comun does not exist
Error(25,39): package com.bbog.centauro.negocio.comun does not exist
Error(26,41): package com.bbog.centauro.persistencia.vo does not exist
Error(27,41): package com.bbog.centauro.persistencia.vo does not exist
C:\JDeveloper\mywork\CentauroVirgen\CentauroWeb15\src\com\bbog\centauro\controlador\servlet\administracion\ProcedimientoServlet.java
Error(22,39): package com.bbog.centauro.negocio.comun does not exist
Error(23,39): package com.bbog.centauro.negocio.comun does not exist
Error(24,39): package com.bbog.centauro.negocio.comun does not exist
C:\JDeveloper\mywork\CentauroVirgen\CentauroWeb15\src\com\bbog\centauro\controlador\servlet\administracion\ProcesaOpcionesServlet.java
Error(17,39): package com.bbog.centauro.negocio.comun does not exist
Error(18,39): package com.bbog.centauro.negocio.comun does not exist
Error(19,39): package com.bbog.centauro.negocio.comun does not exist
C:\JDeveloper\mywork\CentauroVirgen\CentauroWeb15\src\com\bbog\centauro\controlador\servlet\interfaces\GeneracionArchivoVNoMonServlet.java
Error(22,39): package com.bbog.centauro.negocio.comun does not exist
Error(23,39): package com.bbog.centauro.negocio.comun does not exist
Error(24,39): package com.bbog.centauro.negocio.comun does not exist
C:\JDeveloper\mywork\CentauroVirgen\CentauroWeb15\src\com\bbog\centauro\controlador\servlet\administracion\ParametroValidacionServlet.java
Error(22,39): package com.bbog.centauro.negocio.comun does not exist
Error(23,39): package com.bbog.centauro.negocio.comun does not exist
Error(24,39): package com.bbog.centauro.negocio.comun does not exist
C:\JDeveloper\mywork\CentauroVirgen\CentauroWeb15\src\com\bbog\centauro\controlador\servlet\timer\EnviarCronAutomaticoServlet.java
Error(20,39): package com.bbog.centauro.negocio.comun does not exist
Error(21,39): package com.bbog.centauro.negocio.comun does not exist
C:\JDeveloper\mywork\CentauroVirgen\CentauroWeb15\src\com\bbog\centauro\controlador\servlet\administracion\ParametrosContingenciaServlet.java
Error(3,39): package com.bbog.centauro.negocio.comun does not exist
Error(6,48): package com.bbog.centauro.persistencia.exception does not exist
Error(7,42): package com.bbog.centauro.persistencia.dao does not exist
Error(9,34): package com.bbog.centauro.util.log does not exist
C:\JDeveloper\mywork\CentauroVirgen\CentauroWeb15\src\com\bbog\centauro\controlador\servlet\timer\EnviarPagosAutomaticoServlet.java
Error(20,39): package com.bbog.centauro.negocio.comun does not exist
Error(21,39): package com.bbog.centauro.negocio.comun does not exist
C:\JDeveloper\mywork\CentauroVirgen\CentauroWeb15\src\com\bbog\centauro\controlador\servlet\administracion\ConsultaParametroValidacionServlet.java
Error(22,39): package com.bbog.centauro.negocio.comun does not exist
Error(23,39): package com.bbog.centauro.negocio.comun does not exist
Error(24,39): package com.bbog.centauro.negocio.comun does not exist
Error(25,41): package com.bbog.centauro.persistencia.vo does not exist
C:\JDeveloper\mywork\CentauroVirgen\CentauroWeb15\src\com\bbog\centauro\controlador\servlet\login\DatosLoginServlet.java

Hi.
Please always state the JDev version you use when you ask a question.
What do you mean exactly by cleanup? From the look of it, either you changed the package declaration at the top of you Java files for something that doesn't exist or renamed the on-disk directories in the package structure to something that doesn't match the package declarations in your code.
Do not forget there is a direct correlation between packages names and directories.
So, if you have package
com.oracle.blueberryYou will have the following on the disk:
src\com\oracle\blueberryBest Regards,
Frédéric.

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