Do you have the latest updates for your Rational products using IBM Installation Manager? If you are still running Installation Manager 1.7.3 or older you may not!
When clicking Update in IBM Installation Manager, it will search the IBM service repositories for product updates hosted on IBM servers (for example: fixpacks). There have been recent changes to the servers to address security vulnerabilities, and as a result, Installation Manager 1.7.3 or older will no longer find product updates. Installation Manager 1.8 or newer works with the updated server.
For more information, see http://www.ibm.com/support/docview.wss?uid=swg21695613
See all the Installation Manager downloads at http://www-947.ibm.com/support/entry/portal/all_download_links/rational/ibm_installation_manager?productContext=864296863 for information on how to download the Installation Manager update relevant to your installation and use.