InstallShield 2010 Service Pack 1 (SP1) includes changes that offer support for the final released versions of Windows 7, Windows Server 2008 R2, and Windows Installer 5. It also includes additional changes. It is recommended that all users of InstallShield 2010 Premier, Professional, and Express install this update.
Upgrade Note: If you want to open an InstallShield 2010 project in InstallShield 2010 SP1, you must allow InstallShield to upgrade your project to InstallShield 2010 SP1. InstallShield 2010 SP1 includes support for tables that were not available in InstallShield 2010 projects, and these tables need to be added during the upgrade. Note that it is not possible to open InstallShield 2010 SP1 projects in earlier versions of InstallShield (including InstallShield 2010 without SP1). Therefore, if multiple users need to open and modify your InstallShield projects, ensure that all of you apply the SP1 patch at the same time.
If you open an InstallShield 2010 project in InstallShield 2010 SP1, InstallShield 2010 SP1 displays a message box that asks you if you want to convert the project to the new version. If you reply that you do want to convert it, InstallShield creates a backup copy of the project before converting it.