I used to be able to import tif files but now for over 6 months everytime I try ti import one the entire program shuts the moment you hit open on the file. WTF is with that?
Something fishy going on with that (those) tiff file(s).
Embedded layers/ gradient masks/other insidious PS type doin's.
Who uses tiff? Jpeg is fine - and it comes with everything flattened.
But the easy workaround for this, if I needed it, (and I have the exact same setup as you - SL8 with WIN7 64), would be to open the recalcitrant tiff in my viewer (Irfanview), press ctrl+C, switch to Signlab, press ctrl+V).
It even strips out those nasty embedded color profiles.