"No class def found for addin oracle.webdb.jdev.PortletDevelopmentAddin" After Installation of the Oracle Portal Developer Kit (PDK)

(Doc ID 356680.1)

Last updated on AUGUST 04, 2016

Applies to:

Oracle JDeveloper - Version 10.1.3.0.4 and later
Information in this document applies to any platform.

Symptoms

You installed the Oracle Portal Developer Kit (PDK) in JDeveloper 10.1.3 following the instructions from  "OracleAS Portal Developer Kit (PDK) - Installing the Oracle JDeveloper 10g Portal Add-In"

The installation completed successfully but when you launch JDeveloper, it raises the following error:

Severe(2,369): No class def found for addin oracle.webdb.jdev.PortletDevelopmentAddin
Warning(0,0): This extension was written for a previous version of {0} and may not run properly.
Warning(0,0): To switch off these warnings, set the system property ide.extension.legacy.nowarn=true.
Warning(0,0): To disable all incompatible extensions, set the system property ide.extension.legacy.disabled=true.

Cause

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