InstallShield 2012 Express Edition User Guide - Knowledge Base ...

Chapter 2: Getting Started
Upgrading from Earlier Versions of InstallShield
merged, but only directories that are present in the .msi file are removed; therefore, if a merge module
contains new unused directories in its Directory table, the new unused directories are added to the
installation.
In some cases, you may want to change the value of the Keep Unused Directories setting to Yes. For
example, if your project includes custom actions that use directories that are not referenced in any other
area of the project, you may want to select Yes for the Keep Unused Directories setting.
Automatic Downgrade Prevention
When you create a new Express project, the Upgrade Paths view contains an upgrade item called
ISPreventDowngrade; ISPreventDowngrade prevents the current installation from overwriting a future
major version of your product. If you migrate a project from InstallShield 12 Express Edition or earlier
to InstallShield 2012 Express Edition, the ISPreventDowngrade item is not automatically added.
For instructions on how to manually add downgrade prevention support, see Preventing the Current
Installation from Overwriting a Future Major Version of the Same Product.
Support for the UAC Shield Icon on Dialog Buttons
The Install button on the Ready to Install dialog and the Remove button on the Ready to Remove dialog
have the User Account Control (UAC) shield icon when the installation is run on Windows Vista systems
and the installation is not yet running with elevated privileges. This applies to all new projects as well as
projects that are migrated from InstallShield 12 Express Edition or earlier.
Note that InstallShield is run with elevated privileges. Therefore, if you launch your installation from
within InstallShield on a Windows Vista system, it has elevated privileges, and the UAC shield icon is not
displayed on the Ready to Install and Ready to Remove dialogs.
Changes for ALLUSERS and for the Customer Information Dialog
Beginning with InstallShield 2008 Express Edition, the ALLUSERS property is set to 1 by default in all
new Express projects. This is the recommended implementation, since most installations must be run in
a per-machine context with administrative privileges.
If you upgrade a project that was created with InstallShield 12 Express Edition or earlier to InstallShield
2012 Express Edition, InstallShield does not automatically change the value of the ALLUSERS
property or add this property if it was not defined in the earlier project.
If you want to change the value of ALLUSERS in a new or migrated project, you can do so through the
General Information view. For more information, see General Information Settings.
Also new with InstallShield 2008 Express Edition, by default, the Customer Information dialog in all
new Express projects does not display the radio button group that enables end users to specify whether
they want to install the product for all users or for only the current user. This is the recommended
implementation for this dialog.
If you upgrade a project that was created with InstallShield 12 Express Edition or earlier to InstallShield
2012 Express Edition, InstallShield does not automatically change the Customer Information dialog.
To learn more, see Per-User vs. Per-Machine Installations.
New Default Value for the Cache Path Setting for a Release
The default value for the Cache Path setting for a compressed release in the Releases view is now set to
[LocalAppDataFolder]Downloaded Installations. The previous default value was
[WindowsFolder]Downloaded Installations, which may not be available to users on locked-down
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