Failed to get factory prototype resource

Questions
#1

I’ve realised I’ve gotten an undocumented error around changing the factory prototype at runtime.
I seem to be able to implement this correctly, it is set to load dynamically and it has the correct file path
image
However I have been unable to spawn other than what was the original prototype,
the print says
“/!Main/EnemyObjects/Horf.goc”
and the filepath is
“/!Main/EnemyObjects/Horf.go” (its uncompiled so it should work)

the error I’m getting is

ERROR:GAMESYS: Failed to get factory prototype resource: /!Main/EnemyObjects/Horf.goc
ERROR:GAMEOBJECT: No prototype to spawn from.

which reads to me as a failure to reach the file, but the file path is correct.

I’m on Defold 1.6.4 for reference

#2

Sounds like this Lack of information about using dynamic prototype setting for collection factory - #5 by AGulev