Already found weirdness. You can embark with the "ice" that makes up Hell. You're not supposed to be able to do that.
Halflings are also apparently cutting tetraline, as if it were a gemstone. It can be purchased on embark, from 'Small Cut Gems' and from 'Large Cut Gems'. That's not supposed to happen--tetraline is a stone, not a gem.
Ugh...
[INORGANIC:TETRALINE]
[USE_MATERIAL_TEMPLATE:STONE_TEMPLATE_HLG]
[TILE:176]
[IS_STONE]
[STATE_NAME_ADJ:ALL_SOLID:tetraline]
[MELTING_POINT:13000]
[BOILING_POINT:16000]
[IGNEOUS_INTRUSIVE]
[INORGANIC:HELL_ICE]
[DEEP_SURFACE]
[USE_MATERIAL_TEMPLATE:SOIL_TEMPLATE_LKR] Used "soil" template because the only difference is absence of ITEMS_HARD, and I don't want people making crafts out of the frozen hell. Yet. We can change it later if we want.
[STATE_COLOR:ALL_SOLID:WHITE]
[STATE_NAME_ADJ:ALL_SOLID:ice]
[STATE_COLOR:LIQUID:CLEAR] [STATE_NAME_ADJ:LIQUID:water] [STATE_COLOR:GAS:CLEAR] [STATE_NAME_ADJ:GAS:steam] [STATE_NAME_ADJ:SOLID_POWDER:snow] [STATE_NAME_ADJ:SOLID_PASTE:slush] Failsafes in case wacky stuff happens. It SHOULDN'T, but, you never know.
[BASIC_COLOR:1:0]
[BUILD_COLOR:3:0:0]
[TILE_COLOR:7:7:1]
[SPEC_HEAT:4181]
[MELTING_POINT:NONE]
[BOILING_POINT:NONE]
[IGNITE_POINT:NONE]
[HEATDAM_POINT:NONE]
[COLDDAM_POINT:NONE]
[MAT_FIXED_TEMP:9999]
[SOLID_DENSITY:920]
[LIQUID_DENSITY:1000]
[IS_STONE]
[UNDIGGABLE]
I also caught them with access to iridium... I dunno if that's avoidable, as if they don't have the reaction in worldgen then you can't use iridium in fort mode. You CAN embark with Processed Iridium, though, which is weird, as that shouldn't be allowed. Oh well.
More strangeness.... I've got cliffs made out of Blue Dirt, and they're not wet. Which is odd. I've unpaused exactly long enough to see if they would start generating water, but not long enough for any digging. It'll happen soon enough, though, because....
I don't know exactly where, but somebody fucked up hardcore.