Read the release bulletins for the latest information on the
products that you are installing. Release bulletin is
available on the Appeon web site at https://www.appeon.com/support/documents/appeon_online_help/pb2018/release_bulletin_for_pb
(for PowerBuilder) and https://www.appeon.com/support/documents/appeon_online_help/pb2018/release_bulletin_for_im
(for InfoMaker).

Make sure the drive on which you install PowerBuilder is not
compressed. If compression is enabled on the installation drive, the
setup program fails.

Make sure you have a TEMP environment variable that points to an
existing directory location with at least 300MB free space. The setup
programs write files to this directory during the installation and frees
the space after the installation is complete.

Close any open applications.

Back up any files created with earlier versions of Appeon tools.
Make sure that any PBLs you plan to migrate have been regenerated
without error in your current version of PowerBuilder before you back them
up.

In addition to backing up your PBLs, back up any files that
contain information you do not want to lose, such as database files, INI
files, preference information, and modified database definition files.
For more information about backing up and migrating existing
applications, see Postinstallation Tasks.

Read the section called “Software Requirements” to
determine whether you need to install any software before installing
PowerBuilder 2018.