Acresso Software has released SP1 for InstallShield 2009 in a bid to support Windows Installer 4.5 (full version) with the product. InstallShield 2009 sans SP1 only supports the beta version of Windows Installer 4.5.

In addition to above, Acresso has also released an updated version of Standalone Build and InstallShield MSI Tools (MSI Diff and MSI Query). As part of these upgrade, you will also be able to download the latest InstallScript Object that supports Windows Installer 4.5 via the product’s built-in update service module.

Useful links on InstallShield 2009 SP1

Q200241: InstallShield 2009 Service Pack 1

Q200150: InstallShield 2009/InstallShield 2009 SP1 Release Notes