Possible mod mod incompatibility issues; Calamity Mod's Astral Meteor

During my second PC world, I was going down the checklist of bosses (mod), and the next one on my list was Astrum Dias.
Now, he's summoned with the Starcore at night, which requires Stardust, which in turn is gotten from monsters in the Astral Meteor biome, which SHOULD have spawned when I killed The Wall of Flesh, which it didn't. Regular meteors did, and I cheated in a few more instances of the WoF, just to be sure. Nothing.

Now, in theory I could create an Astral Chunk and defeat the...

Possible mod <-> mod incompatibility issues; Calamity Mod's Astral Meteor