IEeee installs successfully but does not work and does not display IEee icon in the browser


This has already happend on the second user's machine in our organization.
User is not a developer - he is a tester.
IEeee installs successfully but does not display icon in the browser. We went to customize toolbar dialog and manually added IEee button from left to right pane. The icon does display now but when clicked freezes up the browser.
We did install Team Explorer on this user machine.
Attached is the screen shot of the browser version - it is 6.0
IEee does work fine on my developer machine with the same version of the browser.
Any guidence would be greatly appreciated - it is a wondefull tool, and I would really love for our testers to be able to use it.
Thank you,

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