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-rw-r--r--advtrains/path.lua2
1 files changed, 1 insertions, 1 deletions
diff --git a/advtrains/path.lua b/advtrains/path.lua
index 506f27f..4955854 100644
--- a/advtrains/path.lua
+++ b/advtrains/path.lua
@@ -18,7 +18,7 @@ function advtrains.conway(midreal, prev, drives_on)--in order prev,mid,return
local nconnid = advtrains.get_matching_conn(pconnid, #midconns)
local next, next_connid, _, nextrailheight = advtrains.get_adjacent_rail(mid, midconns, nconnid, drives_on)
- if not next then
+ if not next or not midconns or not midconns[nconnid] then
return nil
end
return vector.add(advtrains.round_vector_floor_y(next), {x=0, y=nextrailheight, z=0}), midconns[nconnid].c