These issues affect installation on all platforms.
The Ready to Install screen displays the product name as “mq” rather than as Sun Java System Message Queue 4.3. (Bug 6650841)
When the Installer is in the process of installing Message Queue 4.3 and the Progress screen is displayed, the Cancel button is active. Selecting the Cancel button at this time results in incomplete or broken installs. (Bug 6595578)
The Installer Summary Screen contains a number of links that when clicked will launch a log or summary page viewer. If you dismiss this viewer window using the window close button “X” instead of the button labelled “Close', you will not be able to bring this viewer window back up. (Bug 6587138)
Workaround: Use the button labeled Close to close the window.
Running the installer in registration-only mode (installer -r) after performing a silent install in which registration was skipped, results in registration failing with "Premature end of file" error. (Bug 6767988)
When running the Message Queue installer on a computer with no JDK installed, the following error message is displayed: "Invalid root in registry key "HKLM\SOFTWARE\JavaSoft\Java Runtime Environment\CurrentVersion." (Bug 6764358)
Workaround: Install the JDK prior to running the installer.
The mqInstallHome directory is created by the Message Queue installer even before you click the Install button on the Ready To Install screen. (Bug 6595590)