One of the great things about IBM software is that it is not only incredibly difficult to install successfully, but it's also incredibly difficult to troubleshoot when an installation doesn't go according to plan. Here's a quick tip that just might save you from going with a better, less expensive, open source product the next time an installation of an IBM product fails.
*Corrected the name of the file as per comment below. Thanks. Edited by: Cameron McKenzie on Jun 17, 2011 9:59 AM