\version "2.24.0" \score { \new Staff { \key f \major c'1 \key \default c'1 } \midi {} }
This crashes with "In procedure cdar: Wrong type (expecting pair): ()" as far back as 2.14.2.
\version "2.24.0" \score { \new Staff { \key f \major c'1 \key \default c'1 } \midi {} }
This crashes with "In procedure cdar: Wrong type (expecting pair): ()" as far back as 2.14.2.