From: Computerpilot on 06/14/2002
There are way too many possible issues that can cause this problem. Do you have Gator installed? This little 'hell' program can cause this error. Uninstall it or get the update on their website: www.gator.com/help/1525.html. If you do not have this program installed, here are a few other solutions to look into:
This may also be caused when you have upgraded to 6.0 and the MSHTML.DLL is an older version. The version of the file that you should be using is 6.0.2600.0.
It is also possible that another program is conflicting with IE.
Microsoft recommends that you reinstall IE 6.0. However, you have indicated that you have done this already.
Here is a manual way you can update the MSHTML.DLL file yourself without reinstalling IE 6 if your version or the MSHTML.DLL file is not current (run a find for the file, right-click and choose properties over the file, check version):
Microsoft Windows Millennium Edition (Me)
1)Click Start , click Run , type msconfig , and then click OK .
2)Click Extract .
3)Type ie_1.cab, and then click Start .
4)In the Restore from field, type c:\windows\windows update setup files .
5)In the Save as field, type c:\windows\windows update setup files , and then click OK .
6)When you receive a prompt to back up the file to C:\Windows\Helpdesk\Sfc, click Yes or OK .
7)If you receive the following prompt, click Yes or OK :
8)The backup folder does not exist. Do you want to create it?
If you receive a dialog box that says: "The file was successfully extracted", click OK .
9)Click Start , click Run , type msconfig , and then click OK .
11)Type mshtml.dll , and then click Start .
12)In the Restore from field, type c:\windows\windows update setup files .
14)In the Save as field, type c:\windows\system , and then click OK .
15)When you receive a prompt to back up the file to C:\Windows\Helpdesk\Sfc, click Yes or OK .
16)When you receive a dialog box that says: "The file was successfully extracted", click OK .
17)Close System File Checker and then restart the computer.
If you are not running Windows ME (which IE 6.0 comes with the OS), then you should check out support.microsoft.com KBA #Q318153 for instructions on how to do the same procedure in Windows 98.
Keep in mind that it is entirely possible that you installed a program that conflicts with IE. I would suspect all plugins that you might have installed with a previous version of IE and try reinstalling them with the new IE 6 if the above does not work.