Specify whether you want InstallShield to remove unused directories from the Directory table of the .msi file when you build this release. Available options are:

- No—If a directory that is listed in the Directory column of the Directory table is not referenced in any known location in the .msi file, InstallShield removes it from the Directory table of the .msi file that it creates at build time. For Basic MSI and InstallScript MSI projects, this occurs after any merge modules are 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.
- Yes—InstallShield does not remove any directories from the Directory table of the .msi file that it creates at build time.

The default value is No.

Under some conditions, predefined directories cannot be resolved, causing an installation to fail. Removing unused directories from the Directory table enables you to avoid unnecessary failures. Therefore, Macrovision recommends that you select No for this setting.