Error "not a valid Win32 application" when installing TweakUIPublished: Sep 08, 2006
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When you try to install TweakUI PowerToy, you may receive the following error message:
TweakUIPowertoySetup_ia64.exe is not a valid Win32 application
This happens if you're trying to install the Itanium 64 bit version of TweakUI in a 32-bit system.
Download the correct version of TweakUI. The direct download links (for 32 bit systems) are given below:
Tweak UI Version 2.10 requires Windows XP Service Pack 1 (or higher) or Windows Server 2003. If you have a Windows XP system without any Service Packs installed, download Version 2.00.