IE Debugger freezes when I add Watch "

Question

I have been working with IE debugger for a long time. I recently chnaged my computer, and now when I do the following, IE freezes. I want to add a variable to the Watchlist. When I do this with the right mouse button on the th variable, it works fine. If I write a variable in the "watchlist" (click "Add Watch ..." at the bottom of the list) IE hangs.