Your promise to fix #4324 is actually a lie with this throw.

```
Exception of type `System.InvalidOperationException`: Could not download map '55db10c3fe263413efcfb18e4e0953183c22806e'
  at OpenRA.Mods.RA.Widgets.Logic.LobbyLogic.UpdateCurrentMap () [0x00171] in /home/matthias/Projekte/OpenRA/OpenRA.Mods.RA/Widgets/Logic/LobbyLogic.cs:540 
  at (wrapper delegate-invoke) <Module>:invoke_void__this__ ()
  at (wrapper delegate-invoke) <Module>:invoke_void__this__ ()
  at OpenRA.Game.SyncLobbyInfo () [0x00006] in /home/matthias/Projekte/OpenRA/OpenRA.Game/Game.cs:217 
  at OpenRA.Network.UnitOrders.ProcessOrder (OpenRA.Network.OrderManager orderManager, OpenRA.World world, Int32 clientId, OpenRA.Order order) [0x006de] in /home/matthias/Projekte/OpenRA/OpenRA.Game/Network/UnitOrders.cs:172 
  at OpenRA.Network.OrderManager.TickImmediate () [0x00117] in /home/matthias/Projekte/OpenRA/OpenRA.Game/Network/OrderManager.cs:101 
  at OpenRA.Sync+<CheckSyncUnchanged>c__AnonStorey96.<>m__1BB () [0x00007] in /home/matthias/Projekte/OpenRA/OpenRA.Game/Sync.cs:165 
  at OpenRA.Sync.CheckSyncUnchanged[Boolean] (OpenRA.World world, System.Func`1 fn) [0x00008] in /home/matthias/Projekte/OpenRA/OpenRA.Game/Sync.cs:173 
  at OpenRA.Sync.CheckSyncUnchanged (OpenRA.World world, System.Action fn) [0x0001b] in /home/matthias/Projekte/OpenRA/OpenRA.Game/Sync.cs:165 
  at OpenRA.Game.TickInner (OpenRA.Network.OrderManager orderManager) [0x00092] in /home/matthias/Projekte/OpenRA/OpenRA.Game/Game.cs:177 
  at OpenRA.Game.Tick (OpenRA.Network.OrderManager orderManager) [0x00034] in /home/matthias/Projekte/OpenRA/OpenRA.Game/Game.cs:124 
  at OpenRA.Game.Run () [0x0007b] in /home/matthias/Projekte/OpenRA/OpenRA.Game/Game.cs:445 
  at OpenRA.Program.Run (System.String[] args) [0x00011] in /home/matthias/Projekte/OpenRA/OpenRA.Game/Support/Program.cs:114 
  at OpenRA.Program.Main (System.String[] args) [0x0005a] in /home/matthias/Projekte/OpenRA/OpenRA.Game/Support/Program.cs:38
```