The version and build of the installer differ from the installed one

If a newer version of the installer is delivered, especially if the new installer has a different interface, we recommend that you replace the Installation_Area. To find out the interface version of the installer, view the installer's Welcome panel or read the properties.txt file in the installer's root folder.

The Enterprise Server Installer checks whether a previous version was installed before. If a previous version is found, the installer checks whether this version has the same interface as the version to be installed. These situations can occur:

• The previous version has an older interface or no interface version.

  You must also update all InstallableUnits that were installed before. If an installableUnit, which is currently not in the Installation_Area, was installed, you must remove this installableUnit first.

• The previous version has a higher interface.

  The installation is aborted with a message that a newer version of the installer is required.

• The previous version has the same interface.
• You can normally update the InstallableUnits.