Update Google Toolbar in IE 7 With VIsta

This is not a serious problem, but bothersome, nonetheless.  I have been using the Google Toolbar with IE 7 in Vista.  I keep getting an error in my "Event Viewer" that the Google Toolbar for IE 7 could not update.  I don't know of any reason why it won't update, has anyone else encountered this problem. I don't see a way to update manually.