IE8 encounters problem with NIS add-ins

Is anybody else getting the 'Internet Explorer has encountered a problem and needs to close' message every time they close either a tab or window?

 

I've tried resetting all the IE8 settings, which works for one close of tab or window, then the problem returns.  I've systematically gone through my add-ins and the only one/s that stops the problem when disabled are the NIS ones (no particular one - the problem seems to lie with them all).

 

Any help would be appreciated.

 

Thanks