With V1.0.0.1925, start up ColourSpace, click Profiling to get a new profile window, with existing defaults of Rec709 and 10-bit Legal, click on Manual Measure, and click on HSL in the Bars Widget. ColourSpace immediately crashes for me, every time.

Already reported, and fixed in next release.
(Actually an old bug no-one spotted before, and has nothing to do with Rec709/Legal/etc. - it is just when there are no measurements!.)
Steve