Explorer 8 hangs every time in the last few days

Please could you assist: Internet Explorer 8 has just started (since 27th May) hangs every time I try to start it up after working perfectly normally since I installed Safety Minder in February this year.  It only will work if I disable the Safety Minder add-on in Internet Options.  I usually use Google chrome for most thing but need IE8 for work webmail.  Whilst I hadn't used it for a couple of days previously, it may have been affected by a Microsoft security update that was installed automatically the previous day (26th May).  Can anyone give me any advice?  Thank you.