just one little problem remaining: if i try to buildBank
with empty source labels, Ctrlr crashes – see error png –
strange, because it has started doing that since i added
another function elsewhere (a popup menu to select preset
to send – at present it just sends “preset sent” 1..4 to
the various labels) – and i’m fairly sure it didn’t crash
when i tried an ’empty’ buildBank before.
so it needs some contingency for when there’s nothing to
write, i guess. going to try it now with one or more
source slots empty.. no: that’s ok. it’s just if there’s
nothing to write = crash