There are several options for resolving this issue:
Before attempting any of the following options, we highly recommend stopping any other instances of the Windows Installer:
- Right-click the taskbar
- click Task Manager
- Click the Processes tab
- Click Msiexec.exe in the Processes list
- Click End Process
- Click Yes
- Click End Process for each instance of Msiexec.exe
- Close Task Manager.
1) Reinstall the InstallScript Engine from InstallShield Developer:
- Download the ISScript7.zip file from the InstallShield Web site: http://consumer.installshield.com/kb.asp?id=Q108322
- Extract the ISScript7.zip file.
- Double-click the ISScript.msi file.
- Click Start and Run
- Type "C:\Program Files\Common Files\InstallShield\Driver\
\Intel 32\IDriver.exe" /REGSERVER - click OK.
- Note The
varies in different computers. It depends on the version of the InstallScript engine. - Click Start and Run
- Type C:\Windows\System32\msiexec.exe /REGSERVER
- click OK.
- Login with an Administrator account
- Click Start
- Click All Programs
- Click Accessories
- Click Windows Explorer
- Click Folder Options on the Tools menu
- Click the View tab
- Click Show hidden files and folder
- Click OK
- Locate the folder C:\Windows\Installer
- Right-click the Installer folder
- Click Properties
- Click the Security tab
- Click System
- Verify that the Full control check box is selected
- Click Administrators
- Verify that the Full control check box is selected
- Click the user name being used to try and install the software
- Verify that the Full control check box is selected
source: http://support.microsoft.com/kb/888019