Java Development Tools

Hello, I am trying to use a third party library. I am able to register the library in JDeveloper 10.1.3 When I register the library, I add also several libraries that are the dependencies.
The error is on the org.apache.commons.logging.LogFactory But this is one of the jars that I added when I registered the library.

When I'm ready to use it, I get a dependency error.

[ServletException in:/StudentListing.jsp] Missing class: org.apache.commons.logging.LogFactory Dependent class: org.displaytag.tags.TableTag Loader: default.root:0.0.0 Code-Source: /C:/Program Files/JDeveloper(10.1.3)/jdev/mywork/Assessments/Assessments/public_html/WEB-INF/lib/displaytag-1.1.jar Configuration: in /C:/Program Files/JDeveloper(10.1.3)/jdev/system/oracle.j2ee.10.1.3.34.12/embedded-oc4j/config/application.xml The missing class is available from the following locations: 1. Code-Source: /C:/Program Files/JDeveloper(10.1.3)/jakarta-struts/lib/commons-logging.jar (from manifest of /C:/Program Files/JDeveloper(10.1.3)/jakarta-struts/lib/struts.jar & in C:\Program Files\JDeveloper(10.1.3)\jdev\mywork\Assessments\Assessments\public_html) This code-source is available in loader current-workspace-app.web.Assessments-Assessments-webapp:0.0.0. This is a child of the dependent loader default.root:0.0.0. 2. Code-Source: /C:/Program Files/JDeveloper(10.1.3)/webservices/lib/commons-logging.jar (from (ignore manifest Class-Path) in boot.xml in C:\Program Files\JDeveloper(10.1.3)\j2ee\home\oc4j.jar) This code-source is available in loader oc4j.internal:10.1.3. This shared-library can be imported by the "default" application. 3. Code-Source: /C:/Program Files/JDeveloper(10.1.3)/jdev/mywork/Assessments/Assessments/public_html/WEB-INF/lib/commons-logging-1.0.4.jar (from WEB-INF/lib/ directory in C:\Program Files\JDeveloper(10.1.3)\jdev\mywork\Assessments\Assessments\public_html\WEB-INF\lib & in C:\Program Files\JDeveloper(10.1.3)\jdev\mywork\Assessments\Assessments\public_html) This code-source is available in loader current-workspace-app.web.Assessments-Assessments-webapp:0.0.0. This is a child of the dependent loader default.root:0.0.0. ' oracle.classloader.util.AnnotatedNoClassDefFoundError: Missing class: org.apache.commons.logging.LogFactory Dependent class: org.displaytag.tags.TableTag Loader: default.root:0.0.0 Code-Source: /C:/Program Files/JDeveloper(10.1.3)/jdev/mywork/Assessments/Assessments/public_html/WEB-INF/lib/displaytag-1.1.jar Configuration: in /C:/Program Files/JDeveloper(10.1.3)/jdev/system/oracle.j2ee.10.1.3.34.12/embedded-oc4j/config/application.xml The missing class is available from the following locations: 1. Code-Source: /C:/Program Files/JDeveloper(10.1.3)/jakarta-struts/lib/commons-logging.jar (from manifest of /C:/Program Files/JDeveloper(10.1.3)/jakarta-struts/lib/struts.jar & in C:\Program Files\JDeveloper(10.1.3)\jdev\mywork\Assessments\Assessments\public_html) .........


Any comments and/or suggestions will be greatly appreciated