Hi Henoik,
Welcome to Microsoft Community and we are happy to help you on this issue.
As per the query, you get an error message prompting “1607 unable to install Shield scripting runtime” when you try install a program on your computer.
This error message occurs due to the following reasons:
•You run the Setup program from a virtual drive created through the subst command.
•The driver IDriver.exe is not registered correctly.
•The installer Msiexec.exe is not registered correctly.
•The user account does not have permission to access the C:\Windows\Installer folder.
•An older version of the Windows Installer engine was installed from a network drive that is no longer available.
•The user account does not have permission to install software on the computer.
•Another instance of Msiexec.exe is running.
•Another Windows Installer-based Setup program is running.
I would suggest you to rename the Install Script folder on the computer.
You can follow the methods accordingly:
Method 1: Rename the InstallShield folder
a) In File Explorer , open the following folder:
*DRIVE \Program Files\Common Files*
b) Right-click the Installshield folder, and then click Rename.
c) Type InstallShield1, and then press ENTER.
d) Try to install the game.
If the problem continues to occur, go to Method 2.
Method 2: Locate and then close the files
To resolve this problem, locate, and then close the Idriver.exe and Msiexec.exe files. To do this, follow these steps:
a) Open the Task Manager. Type task manager on the start screen and click on Task Manager.
b) On the Processes tab, locate idriver.exe and msiexec.exe.
c) Select each instance of both processes, and then click End Process.
d) Click End Process on each Windows Task Manager window that opens.
e) Close the Task Manager.
Method 3:
I would suggest you to install the game in clean boot state and check if any other services or programs are leading to this issue.
Please follow the link below to boot the computer into clean boot state:
“How to perform a clean boot to troubleshoot a problem in Windows Vista, Windows 7, or Windows 8”
http://support.microsoft.com/kb/929135
Note: Please go through the section: How to reset the computer to start as usual after troubleshooting with clean boot of the Kb article to boot the computer in normal startup after fixing the issue. Steps applies to windows 10 as well.
Hope it helps.
Please feel free to contact us if you have any other Windows related issue and we would be glad to assist you.
Thank You.