After having successfully installed Workplace XT v 1.1.5.0 applying FP1 of Workplace XT, version 1.1.5.1 fails. The error message showing in the Install Shield is plain and simple, that is meaningless: null. In the log file I found “JVM_HOME = null”.
Reported this as a PMR which helped me solve the problem. Simply just uninstalled v 1.1.5, then installed 1.1.5.1 since it is a cumulative fix. Info from IBM:
The Workplace XT 1.1.5.1-WPXT-FP001 fix pack installs a new, complete Workplace XT 1.1.5.1 system, or upgrades an existing Workplace XT system. Workplace XT fix packs are cumulative; each fix pack contains the base release and content from all previously released fix packs.
So seen, it would be possible just to scrap the existing installation including the registry path and install Workplace XT 1.1.5.1 directly.