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Error Locating Object Handler
http://www.vistaarticles.com/articles/173/1/Error-Locating-Object-Handler
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Published on 11/23/2006
 
When you try to download a program (.exe) or zip (.zip) file, Internet Explorer may display a blank Web page that contains an ActiveX icon in the upper-right corner.

Error Locating Object Handler

WARNING: If you use Registry Editor incorrectly, you may cause serious problems that may require you to reinstall your operating system. Microsoft cannot guarantee that you can solve problems that result from using Registry Editor incorrectly. Use Registry Editor at your own risk.

To resolve this issue, delete the following registry key:
HKEY_LOCAL_MACHINE\Software\Microsoft\Internet Explorer\Plugins\Extension