InstallScript engine is older than version required to run this setup...

I'd google that error message, for starters.
Probably a lot quicker than signing up her on Apple discussions, just saying...

First try installing an InstallShield engine *version 11*, as per the following document:

Update to the Latest InstallShield Installation Engines

Does the install go through with the newer engine in place?

If not post back. There's another thing we can try to get past one of these.

Hi,
No, it doesn't. I've now spent >2 hours looking for feedbacks & tricks about this issue and no way to get things sorted out...

iTunesSetup.exe file version is 7.6.2.9 and install of ISS engine v7 or v11 didn't solve probs :-/

If you have an other idea, I'd appreciate ! 🙂

Ok, I've found one which worked :

http://www.winway.com/Main3/support/Download/ISScript8.Msi

Installation of iTunesSetup.exe v7.6.2.9 has succeeded with it.

I got a "ITDetector.ocx failed to unregister" problem during install but it didn't prevent the whole install to finish correctly. wooohoooo !

🙂 Nicely done!

There must have been an iTfW version 4.\[something] jammed on the machine ... I believe some of them used the InstallShield version 8 engine. All of the versions 5.x or 6.x used a version 11.

Fingers crossed, you shouldn't get this particular error again. Versions of iTunes for Windows from 7.0.0.70 or higher aren't InstallShield based ... however they need to use the InstallShield engines in order to uninstall any iTunes versions 6.x or lower already on the machine (prior to installing the new version 7.x). Now that all the older versions are safely uninstalled, the InstallShield engines shouldn't be called on any more during an update/install.

THANK YOU SO MUCH!!!!!!!!

I have had my new iPod since March and iTunes wouldnt install. I downloaded the ISScript file you talked about and it works! I spent HOURS at a time multiple days a week trying to fix it, but finally gave up. Thank you for finding this fix!!!

I basically had the same problem, but when i downloaded the InstallScript, and then iTunes, iTunes would not install because my installscript was "too old" even though I installed version 8. So, should i uninstall my current iTunes (i have version 6.0.4.2)? I have been going in circles trying to correct this problem.

So, should i uninstall my current iTunes (i have version 6.0.4.2)? I have been going in circles trying to correct this problem.

If you can get that and your current QuickTime out of the way, then the new version should install.

Let's try the following technique aimed at doing that.

First, head into your Add/Remove programs and uninstall your QuickTime. If it goes, good. If it doesn't, we'll just attend to it when we attend to iTunes.

Next, download and install the Windows Installer CleanUp utility:

Description of the Windows Installer CleanUp Utility

Now launch Windows Installer CleanUp ("Start > All Programs > Windows Install Clean Up"), find any iTunes and/or QuickTime entries in the list of programs in CleanUp, select those entries, and click “remove”.

Next, we'll manually remove any leftover iTunes or QuickTime program files:

(1) Open Local Disk (C:) in Computer or whichever disk programs are installed on.

(2) Open the Program Files folder.

(3) Right-click the iTunes folder and select Delete and choose Yes when asked to confirm the deletion.

(4) Right-click the QuickTime folder and select Delete and choose Yes when asked to confirm the deletion. (Note: This folder may have already been deleted if QuickTime was successfully removed using Add/Remove Programs earlier.)

(5) Delete the QuickTime and QuicktimeVR files located in the C:\Windows\system32\ folder. Click Continue if Windows needs confirmation or permission to continue. (Note: These files may have already been deleted if QuickTime was successfully removed using Add/Remove Programs earlier.)

(6) Right-click on the Recycle Bin and on the shortcut menu, click Empty Recycle Bin.

(7) Restart your computer.

Now try another iTunes install. Does it go through properly now?

OMG it worked! I've tried EVERYTHING (except that because i wasn't sure if it would work) THANK YOU THANK YOU THANK YOU THANK YOU THANK YOU THANK YOU THANK YOU THANK YOU!!!