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-rw-r--r--advtrains/init.lua5
1 files changed, 4 insertions, 1 deletions
diff --git a/advtrains/init.lua b/advtrains/init.lua
index 482c33d..de72ea1 100644
--- a/advtrains/init.lua
+++ b/advtrains/init.lua
@@ -281,7 +281,10 @@ advtrains.avt_save = function(remove_players_from_wagons)
local _,proto = advtrains.get_wagon_prototype(wdata)
if proto.has_inventory then
local inv=minetest.get_inventory({type="detached", name="advtrains_wgn_"..id})
- wdata.ser_inv=advtrains.serialize_inventory(inv)
+ if inv then -- inventory is not initialized when wagon was never loaded
+ -- TOOD: What happens with unloading rails when they don't find the inventory?
+ wdata.ser_inv=advtrains.serialize_inventory(inv)
+ end
end
-- TODO apply save-keys here too
end