To resolve a version mismatch issue when using the ActiveX client, try one or more of the following suggestions (from the user desktop):

1. Remove the IEGCtrl class file from the OS “downloaded program files” directory. Typically, the path is "C:\WINDOWS\Downloaded Program Files" directory. You can remove the class file by right-clicking the file and selecting the Remove option.

If you have already removed the IEGCtrl class file:

2. Check the C:\Windows\Downloaded Program Files directory from a command or DOS prompt. If you see any "CONFLICT" directories, remove them as well.

3. Check for the file <Temporary Internet Files>\goglobal-activex.cab. If it exists, remove it. Typically, the path is "C:\Documents and Settings\%USERNAME%\Local Settings\Temporary Internet Files".

QUOTE:
Note: You may have to change the "Hidden files and folders" option to Show in your File Explorer -> Tools -> Folder Options -> View

For additional info, see also the following Microsoft KB note:

http://support.microsoft.com/default.aspx?scid=kb;en-us;154850