Certain structures such as the Castle in the Sky and now the meteorites from AE2. You can test by using the locate command and by using the meteorite compass. This should be a higher priority now because you cannot continue in AE2 without cheating in the presses and sky stone

Hello!
I have no clues about Castle in the Sky, but from AE you have recipes for inscriber/press. Also you have a recipe for sky stone.

From AllTheMods-0.0.30 and possibly later versions, meteorites spawns seems to be working again, but they kept those recipes for now, so it shouldn't be a problem.

This was due to world height issues and should be fixed in 1.18.
Closing all issues to be ready for ATM7 1.18 release tomorrow! If you are still having issues on the new version of minecraft please make a new issue thanks!