fix a crash, add a normal bot (harder)

mods/ra/rules/system.yaml

@@ -32,7 +32,7 @@ Player:
 		InitialCash: 5000
 	ActorGroupProxy:
 	DeveloperMode:
-	HackyAI@Default:
+	HackyAI@EasyAI:
 		Name:Easy AI
 		BuildingFractions:
 			proc: 20%
@@ -40,7 +40,6 @@ Player:
 			tent: 5%
 			weap: 5%
 			pbox: 5%
-			hbox: 5%
 			gun: 5%
 			tsla: 5%
 			ftur: 5%
@@ -48,9 +47,9 @@ Player:
 			sam: 1%
 			atek: 1%
 			stek: 1%
-			silo: 5%
 			fix: 1%
 			dome: 1%
+			hbox: 5%
 		UnitsToBuild:
 			e1: 0%
 			e2: 0%
@@ -58,6 +57,30 @@ Player:
 			1tnk: 0%
 			2tnk: 0%
 			3tnk: 0%
+	HackyAI@NormalAI:
+		Name:Normal AI
+		BuildingFractions:
+			proc: 30%
+			tent: 1%
+			weap: 1%
+			pbox: 5%
+			gun: 15%
+			ftur: 10%
+			tsla: 15%
+			dome: 1%
+			agun: 5%
+			sam: 1%
+			atek: 1%
+			stek: 1%
+			fix: 0.1%
+		UnitsToBuild:
+			1tnk: 0%
+			2tnk: 0%
+			3tnk: 0%
+			4tnk: 0%
+			arty: 0%
+			v2rl: 0%
+		SquadSize: 15
 	PlayerColorPalette:
 		BasePalette: terrain
 	SurrenderOnDisconnect: