Index: ps/trunk/binaries/data/mods/public/gui/common/tooltips.js
===================================================================
--- ps/trunk/binaries/data/mods/public/gui/common/tooltips.js
+++ ps/trunk/binaries/data/mods/public/gui/common/tooltips.js
@@ -654,6 +654,8 @@
  */
 function getEntityCostComponentsTooltipString(template, entity, buildingsCountToTrainFullBatch = 1, fullBatchSize = 1, remainderBatch = 0)
 {
+	if (!template.cost)
+		return [];
 	let totalCosts = multiplyEntityCosts(template, buildingsCountToTrainFullBatch * fullBatchSize + remainderBatch);
 	if (template.cost.time)
 		totalCosts.time = Math.ceil(template.cost.time * (entity ? Engine.GuiInterfaceCall("GetBatchTime", {
Index: ps/trunk/binaries/data/mods/public/simulation/components/ProductionQueue.js
===================================================================
--- ps/trunk/binaries/data/mods/public/simulation/components/ProductionQueue.js
+++ ps/trunk/binaries/data/mods/public/simulation/components/ProductionQueue.js
@@ -452,8 +452,9 @@
 			let techCostMultiplier = this.GetTechCostMultiplier();
 
 			let cost = {};
-			for (let res in template.cost)
-				cost[res] = Math.floor((techCostMultiplier[res] || 1) * template.cost[res]);
+			if (template.cost)
+				for (let res in template.cost)
+					cost[res] = Math.floor((techCostMultiplier[res] || 1) * template.cost[res]);
 
 			// TrySubtractResources should report error to player (they ran out of resources).
 			if (!cmpPlayer.TrySubtractResources(cost))
@@ -469,7 +470,7 @@
 				this.SetAnimation("researching");
 			}
 
-			let time = techCostMultiplier.time * template.researchTime * 1000;
+			let time = techCostMultiplier.time * (template.researchTime || 0) * 1000;
 			this.queue.push({
 			    "id": this.nextID++,
 			    "player": cmpPlayer.GetPlayerID(),
Index: ps/trunk/binaries/data/mods/public/simulation/data/technologies/successors/unlock_reform_army.json
===================================================================
--- ps/trunk/binaries/data/mods/public/simulation/data/technologies/successors/unlock_reform_army.json
+++ ps/trunk/binaries/data/mods/public/simulation/data/technologies/successors/unlock_reform_army.json
@@ -2,7 +2,6 @@
 	"pair": "successors/pair_unlock_champions",
 	"genericName": "Reform Army",
 	"description": "The Roman-style core of the Seleucid army.",
-	"cost": { "food": 0, "wood": 0, "stone": 0, "metal": 0 },
 	"requirements": {
 		"all": [
 			{ "tech": "phase_city" },
@@ -11,7 +10,6 @@
 	},
 	"requirementsTooltip": "Unlocked in City Phase.",
 	"icon": "helmet_corinthian_crest.png",
-	"researchTime": 0,
 	"tooltip": "Unlock the Champion Infantry Swordsman.",
 	"soundComplete": "interface/alarm/alarm_upgradearmory.xml"
 }
Index: ps/trunk/binaries/data/mods/public/simulation/data/technologies/successors/unlock_traditional_army.json
===================================================================
--- ps/trunk/binaries/data/mods/public/simulation/data/technologies/successors/unlock_traditional_army.json
+++ ps/trunk/binaries/data/mods/public/simulation/data/technologies/successors/unlock_traditional_army.json
@@ -2,7 +2,6 @@
 	"pair": "successors/pair_unlock_champions",
 	"genericName": "Traditional Army",
 	"description": "The Macedonian-style core of the Seleucid army.",
-	"cost": { "food": 0, "wood": 0, "stone": 0, "metal": 0 },
 	"requirements": {
 		"all": [
 			{ "tech": "phase_city" },
@@ -11,7 +10,6 @@
 	},
 	"requirementsTooltip": "Unlocked in City Phase.",
 	"icon": "helmet_corinthian_crest.png",
-	"researchTime": 0,
 	"tooltip": "Unlock the Champion Infantry Pikeman.",
 	"soundComplete": "interface/alarm/alarm_upgradearmory.xml"
 }