Does anybody know why Dorico is allergic to transposing a piece by a semitone either up or down? That particular dialogue box seems to hate me, in any case….
looks OK with this setting.
I used the calculate interval section on the right hand side to come up with augmented unison
it won’t let me do that….
If I try to use the calculate interval section the “apply” button greys out:
If I try to transpose it by a minor second then again, Computer Says No:
and if I try to do it via number of divisions, it decides that odd numbers are verboten:
Honestly, at this point I’m wondering why the UI hates me…
Do you have key changes in your piece?
Try to transpose them indepentdently, maybe you are trying to create 13 sharps or something 
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Aha! That worked!
Funny; that’s a step backwards from Sibelius 6….