Adding a conditional if-then or if-then-else, then immediately try to delete it causes a looping string of errors needing SB to reloaded (creates a >60KB log file).
SequenceEditor.lua:975: attempt to call field 'condFunc' (a nil value)
SequenceEditor.lua:973: attempt to index local 'slot' (a nil value)
Edit-1: Must've been inherited from 3.04 which generates: SequenceEditor.lua:969: attempt to index local 'slot' (a nil value)