which mod to remove, the Current Hill mod pack or the Su-30MK_SFM v2.1.12b?
There does appear to be some sort of incompatibility between the two, the issue occurred again when installing both.
--Edit, from logfile:
2023-12-30 23:27:55.767 INFO APP (Main): MissionSpawn:spawnShips 0
2023-12-30 23:27:55.772 ERROR woShip (Main): Failed to create ship: Descriptor not found weapons.shells.Steregushchiy_100_AA
2023-12-30 23:27:55.775 WARNING LOG (46792): 1 duplicate message(s) skipped.
2023-12-30 23:27:55.775 ERROR woShip (Main): Failed to create ship: Descriptor not found weapons.shells.Karakurt_76_HE
2023-12-30 23:27:55.775 INFO APP (Main): MissionSpawn:spawnShips 80
2023-12-30 23:27:55.776 ERROR woShip (Main): Failed to create ship: Descriptor not found weapons.shells.Visby_12_7_BRSPRJ