From what I can tell, Installshield only cares about one person: the dork who blindly builds the Installer package for their one little application. Apparently, if you need to call on the Installshield components, don’t ever even try to discover whether they’re already installed on the target. Instead, assume that they must *not* be installed (presumably because every developer on the planet has the privilege of being the first to get software installed on each PC where it’s being used), and always install a copy of some Installshield dependency on the end-user’s PC. And then for good measure, make sure that there’s a hard-coded dependency on the version of the InstallShield bits that went with the installer.
-ParanoidMike
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