Woodchip - yes I did.
Woolwell - I did as you suggested and I got referred to their FAQ/forums. The crumb of comfort is that I am not the only person with this problem.
Apparently the last version has a few problems.
Both of you - "thank you for your interest in my problem."
I have TomTom Home version 18.104.22.1688 and it is working fine on Win 7 Home Premium. May be if you check with TomTom they will point you in the right direction. They are available via e mail. Try their website. Equally so, can you try and install an earlier version like mine and see if it works OK for you. [link text]
: http://uk.support.tomtom.com/app/answers/minordetail/aid/13348/TomTom Runtime help