Crash when using -g switch

[willeke1234]

If I run GO with the -g switch (very useful in developing GUI) then GO crashes when I press a key and then press some drawstops. Steps to reproduce:
-Start GO with -g
-Load the demo organ
-Click on a key on the lower manual
-Click on Cornett III
-Click on Flute douce 4'

This is not a bug that regular users will encounter.

macOS Sequoia 15.0
GrandOrgue v3.15.1-1

Crash.txt.zip

[oleg68]

The root case is GOReferencePipe becuse it's Initialize() has never been called.