Fixes to resolve exceptions in multi player situations

Moose Development/Moose/AI/AI_A2A_Dispatcher.lua

@@ -1724,6 +1724,7 @@ do -- AI_A2A_DISPATCHER
           self:E( { DefenderSquadron } )
           local SpawnCoord = DefenderSquadron.Airbase:GetCoordinate() -- Core.Point#COORDINATE
           local TargetCoord = Target.Set:GetFirst():GetCoordinate()
+          if TargetCoord then
             local Distance = SpawnCoord:Get2DDistance( TargetCoord )
             
             if ClosestDistance == 0 or Distance < ClosestDistance then
@@ -1736,6 +1737,7 @@ do -- AI_A2A_DISPATCHER
             end
           end
         end
+      end
       
       if ClosestDefenderSquadronName then
       

Moose Development/Moose/Wrapper/Group.lua

@@ -1170,7 +1170,7 @@ do -- Players
   -- @return #nil The group has no players
   function GROUP:GetPlayerNames()
   
-    local PlayerNames = nil
+    local PlayerNames = {}
     
     local Units = self:GetUnits()
     for UnitID, UnitData in pairs( Units ) do

Moose Development/Moose/Wrapper/Unit.lua

@@ -598,12 +598,17 @@ end
 --   @param #UNIT self
 function UNIT:GetThreatLevel()
 
-  local Attributes = self:GetDesc().attributes
-  self:T( Attributes )
 
   local ThreatLevel = 0
   local ThreatText = ""
 
+  local Descriptor = self:GetDesc()
+  
+  if Descriptor then 
+  
+    local Attributes = Descriptor.attributes
+    self:T( Attributes )
+  
     if self:IsGround() then
     
       self:T( "Ground" )
@@ -680,15 +685,15 @@ function UNIT:GetThreatLevel()
   
       self:T( "Ship" )
   
---["Aircraft Carriers"] = {"Heavy armed ships",},
---["Cruisers"] = {"Heavy armed ships",},
---["Destroyers"] = {"Heavy armed ships",},
---["Frigates"] = {"Heavy armed ships",},
---["Corvettes"] = {"Heavy armed ships",},
---["Heavy armed ships"] = {"Armed ships", "Armed Air Defence", "HeavyArmoredUnits",},
---["Light armed ships"] = {"Armed ships","NonArmoredUnits"},
---["Armed ships"] = {"Ships"},
---["Unarmed ships"] = {"Ships","HeavyArmoredUnits",},
+  --["Aircraft Carriers"] = {"Heavy armed ships",},
+  --["Cruisers"] = {"Heavy armed ships",},
+  --["Destroyers"] = {"Heavy armed ships",},
+  --["Frigates"] = {"Heavy armed ships",},
+  --["Corvettes"] = {"Heavy armed ships",},
+  --["Heavy armed ships"] = {"Armed ships", "Armed Air Defence", "HeavyArmoredUnits",},
+  --["Light armed ships"] = {"Armed ships","NonArmoredUnits"},
+  --["Armed ships"] = {"Ships"},
+  --["Unarmed ships"] = {"Ships","HeavyArmoredUnits",},
     
       local ThreatLevels = {
         "Unarmed ship", 
@@ -715,6 +720,7 @@ function UNIT:GetThreatLevel()
   
       ThreatText = ThreatLevels[ThreatLevel+1]
     end
+  end
 
   self:T2( ThreatLevel )
   return ThreatLevel, ThreatText