This may be documented or noted somewhere but I haven't see it.
When installing the SDK, ibm-java-x86_64-sdk-ea-8.0-0.0.bin, one may get this error message from the installer: "The Installer Cannot be Run on this System. The installer cannot run on your configuration. It will now quit."
This text should be changed to something like "you need root permissions to run this installation program" or the installer should be modified to detect the condition. Re-running the installation program using sudo fixes the problem.