also need help with caravan

same, but I noticed that if you settle the caravan the vehicle is present, it disapears when defending the caravanm but know about entering a colony. Also items in the caravan disapear when on you exit a colony.

i cant send out a vehicle caravan when i try to set the route it just closes out

if any of you are sending animals with your caravan try seeing if it works when you dont. i have had success in that.

i am also still having this problem, please someone say they found a fix.

yeah, caravans are completely broken, and it's all silence on that discord. Really seems like this core and the associated mods are coming to a close

I noticed a pattern - caravans fail to form only when they contain amphibious transport.
The problem occurs specifically with amphibious vehicles from various RimThunder mods (BMP3, BTR80, BRDM2, T38, etc.). Regular ground vehicles work fine, but any amphibious vehicle causes a System.IndexOutOfRangeException in WorldVehicleReachability when trying to calculate world paths.
The pattern is clear:

Ground vehicles (T80, T90, BMPT) - caravans work
Amphibious vehicles (BMP3, BTR80, BRDM2, T38) - caravans fail with error
Boats from VVE - caravans work
Amphibious vehicles from both updated and non-updated RimThunder mods - caravans fail

I've temporarily fixed this by removing the customBiomeCosts section for Ocean/Lake from amphibious vehicle XMLs, but a proper fix from the mod author would be appreciated.

Is anyone else experiencing this specific amphibious vehicle caravan issue?