During the installation process, the Tibco Universal Installer checks if there is an existing TIBCO_HOME directory. If there is, it will give you the option to select the current Tibco_Home. However, in some rare circumstances, customers may map different directories which results in the Universal Installer picking up a directory which is not the real TIBCO_HOME, due to some inconsistency with the mapping structure.  In that case, directly enter and execute the command "echo $TIBCO_HOME" in a a terminal and check if the output matches the entry that the Tibco Universal Installer is using. Once you determine that, you can make the required changes so that both the environment as well the Installer are using the same TIBCO_HOME entry.