diff -r dd2e51f7303d -r 93ba1826b8c2 share/hedgewars/Data/Scripts/Multiplayer/Space_Invasion.lua
--- a/share/hedgewars/Data/Scripts/Multiplayer/Space_Invasion.lua	Fri Jul 06 17:16:01 2018 +0200
+++ b/share/hedgewars/Data/Scripts/Multiplayer/Space_Invasion.lua	Sat Jul 07 18:37:21 2018 +0200
@@ -2183,7 +2183,7 @@
 		end
 
 	-- if player is hit by circle bazooka
-	elseif (GetGearType(gear) == gtShell) then
+	elseif (GetGearType(gear) == gtShell) and (CurrentHedgehog ~= nil) then
 
 		dist = GetDistFromGearToGear(gear, CurrentHedgehog)
 
@@ -2223,6 +2223,9 @@
 -- collision detection for player entering a circle
 function CheckDistances()
 
+	if not CurrentHedgehog then
+		return
+	end
 	--nw WriteLnToConsole("Start of CheckDistances()")
 
 	for i = 0,(vCCount-1) do