Game crashes when booting and is Caused by: java.lang.NullPointerException: Registry Object not present: alexscaves:irradiated

[VeloxMortem01]

whenever i use alex's caves 1.1.0 or later the game crashes on boot if i use any version before that it works fine my citadel is up to date Caused by: java.lang.NullPointerException: Registry Object not present: alexscaves:irradiated no idea what that means