i was using FD 0.9 fine but i thought i'd go up to 1.0 preview

well yesterday when i actually needed it (rather than just a gadget) it refused to let me plan a journey

if i click on the map the menu come up but then disappears again,
if i'm quick enough to click the address button then it does some flicking about and leaves the little box up with the street/postcode, town/postcode type options but the main FD window is blank

then when i close that little window the side stats are there but no map