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Internet Explorer has encountered a problem and needs to close (Mshtml.dll)
http://www.vistaarticles.com/articles/166/1/Internet-Explorer-has-encountered-a-problem-and-needs-to-close-%28Mshtml.dll%29
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Published on 11/23/2006
 
This behavior may be caused by an older file from a Beta version of Microsoft Windows XP and the Internet Explorer 6 Public Preview releases.

Internet Explorer has encountered a problem and needs to close (Mshtml.dll)

Remove Smart Tags Support for Internet Explorer
1. Close all open Internet Explorer windows.
2. In Control Panel, start the Add or Remove Programs tool (or the Add/Remove Programs tool).
3. Click Smart tags support for Microsoft Internet Explorer, and then click Change/Remove (or click Add/Remove).

Disable Smart Tags in Internet Explorer
1. Start Internet Explorer.
2. On the Tools menu, click Internet Options.
3. On the Advanced tab, click to clear the Enable smart tags check box.
4. Click OK, and then restart Internet Explorer.