diff --git a/ModuleComputers/src/net/torvald/terrarum/modulecomputers/gameitems/ItemWearableWorldRadar.kt b/ModuleComputers/src/net/torvald/terrarum/modulecomputers/gameitems/ItemWearableWorldRadar.kt
index b27eaa128..5218f2f91 100644
--- a/ModuleComputers/src/net/torvald/terrarum/modulecomputers/gameitems/ItemWearableWorldRadar.kt
+++ b/ModuleComputers/src/net/torvald/terrarum/modulecomputers/gameitems/ItemWearableWorldRadar.kt
@@ -5,7 +5,10 @@ import com.badlogic.gdx.graphics.Color
 import com.badlogic.gdx.graphics.g2d.SpriteBatch
 import com.badlogic.gdx.graphics.g2d.TextureRegion
 import com.badlogic.gdx.utils.Disposable
-import net.torvald.terrarum.*
+import net.torvald.terrarum.App
+import net.torvald.terrarum.CommonResourcePool
+import net.torvald.terrarum.ModMgr
+import net.torvald.terrarum.Terrarum
 import net.torvald.terrarum.gameactors.ActorWithBody
 import net.torvald.terrarum.gameitems.GameItem
 import net.torvald.terrarum.gameitems.ItemID
@@ -45,6 +48,8 @@ class ItemWearableWorldRadar(originalID: String) : GameItem(originalID) {
     val ui = WearableWorldRadarUI(vm)
 
     init {
+        super.equipPosition = EquipPosition.HAND_GRIP
+
         vm.getIO().blockTransferPorts[1].attachDevice(WorldRadar())
         vm.peripheralTable[1] = PeripheralEntry(
             ExtDisp(vm, 160, 140), 32768, 1, 0
diff --git a/assets/mods/dwarventech/ModuleComputers.jar b/assets/mods/dwarventech/ModuleComputers.jar
index dabfa6320..2ea9730d9 100644
Binary files a/assets/mods/dwarventech/ModuleComputers.jar and b/assets/mods/dwarventech/ModuleComputers.jar differ
diff --git a/src/net/torvald/terrarum/App.java b/src/net/torvald/terrarum/App.java
index d4919ed03..4593790b5 100644
--- a/src/net/torvald/terrarum/App.java
+++ b/src/net/torvald/terrarum/App.java
@@ -28,6 +28,7 @@ import net.torvald.terrarum.gamecontroller.IME;
 import net.torvald.terrarum.gamecontroller.InputStrober;
 import net.torvald.terrarum.gamecontroller.KeyToggler;
 import net.torvald.terrarum.gamecontroller.TerrarumKeyboardEvent;
+import net.torvald.terrarum.gameitems.GameItem;
 import net.torvald.terrarum.gameworld.GameWorld;
 import net.torvald.terrarum.imagefont.TinyAlphNum;
 import net.torvald.terrarum.langpack.Lang;
@@ -851,6 +852,15 @@ public class App implements ApplicationListener {
      * Init stuffs which needs GL context
      */
     private void postInit() {
+        ModMgr.INSTANCE.invoke(); // invoke Module Manager
+        printdbg(this, "all modules loaded successfully");
+
+
+        // test print
+        System.out.println("[App] Test printing every registered item");
+        Terrarum.INSTANCE.getItemCodex().getItemCodex().values().stream().map(GameItem::getOriginalID).forEach(System.out::println);
+
+
         // create tile atlas
         printdbg(this, "Making terrain textures...");
         tileMaker = new CreateTileAtlas();
@@ -878,14 +888,13 @@ public class App implements ApplicationListener {
             System.err.println("[AppLoader] failed to create audio device: Audio device occupied by Exclusive Mode Device? (e.g. ASIO4all)");
         }
 
+        CommonResourcePool.INSTANCE.loadAll();
+
         // if there is a predefined screen, open that screen after my init process
         if (injectScreen != null) {
             setScreen(injectScreen);
         }
         else {
-            ModMgr.INSTANCE.invoke(); // invoke Module Manager
-            CommonResourcePool.INSTANCE.loadAll();
-            printdbg(this, "all modules loaded successfully");
             IngameRenderer.initialise();
         }
 
diff --git a/src/net/torvald/terrarum/ModMgr.kt b/src/net/torvald/terrarum/ModMgr.kt
index 0186a2456..087ac228f 100644
--- a/src/net/torvald/terrarum/ModMgr.kt
+++ b/src/net/torvald/terrarum/ModMgr.kt
@@ -10,8 +10,6 @@ import net.torvald.terrarum.gameitems.ItemID
 import net.torvald.terrarum.itemproperties.ItemCodex
 import net.torvald.terrarum.itemproperties.MaterialCodex
 import net.torvald.terrarum.langpack.Lang
-import net.torvald.terrarum.savegame.ByteArray64GrowableOutputStream
-import net.torvald.terrarum.savegame.ByteArray64Reader
 import net.torvald.terrarum.utils.CSVFetcher
 import net.torvald.terrarum.utils.JsonFetcher
 import org.apache.commons.csv.CSVFormat
@@ -20,7 +18,6 @@ import org.apache.commons.csv.CSVRecord
 import java.io.File
 import java.io.FileInputStream
 import java.io.FileNotFoundException
-import java.io.PrintStream
 import java.net.MalformedURLException
 import java.net.URL
 import java.net.URLClassLoader
@@ -132,12 +129,12 @@ object ModMgr {
 
                         // for modules that has JAR defined
                         if (jar.isNotBlank()) {
-//                            val urls = arrayOf<URL>()
+                            val urls = arrayOf<URL>()
 
-//                            val cl = JarFileLoader(urls)
-//                            cl.addFile("${File(modDir).absolutePath}/$moduleName/$jar")
-//                            moduleClassloader[moduleName] = cl
-//                            newClass = cl.loadClass(entryPoint)
+                            val cl = JarFileLoader(urls)
+                            cl.addFile("${File(modDir).absolutePath}/$moduleName/$jar")
+                            moduleClassloader[moduleName] = cl
+                            newClass = cl.loadClass(entryPoint)
                         }
                         // for modules that are not (meant to be used by the "basegame" kind of modules)
                         else {
@@ -147,11 +144,7 @@ object ModMgr {
                     catch (e: Throwable) {
                         printdbgerr(this, "$moduleName failed to load, skipping...")
                         printdbgerr(this, "\t$e")
-                        val ba = ByteArray64GrowableOutputStream()
-                        val sw = PrintStream(ba, true)
-                        e.printStackTrace(sw)
-                        val bw = ByteArray64Reader(ba.toByteArray64(), Charsets.UTF_8)
-                        printdbgerr(this, bw.readText())
+                        print(App.csiR); e.printStackTrace(System.out); print(App.csi0)
                         moduleInfo.remove(moduleName)
                     }
 
@@ -183,6 +176,9 @@ object ModMgr {
                 print(App.csiR); e.printStackTrace(System.out); print(App.csi0)
                 moduleInfo.remove(moduleName)
             }
+            finally {
+
+            }
         }
 
     }
@@ -315,15 +311,24 @@ object ModMgr {
 
 
     object GameBlockLoader {
+        init {
+            Terrarum.blockCodex = BlockCodex()
+            Terrarum.wireCodex = WireCodex()
+        }
+
         @JvmStatic operator fun invoke(module: String) {
-            Terrarum.blockCodex = BlockCodex(module, "blocks/blocks.csv")
-            Terrarum.wireCodex = WireCodex(module, "wires/")
+            Terrarum.blockCodex.fromModule(module, "blocks/blocks.csv")
+            Terrarum.wireCodex.fromModule(module, "wires/")
         }
     }
 
     object GameItemLoader {
         val itemPath = "items/"
 
+        init {
+            Terrarum.itemCodex = ItemCodex()
+        }
+
         @JvmStatic operator fun invoke(module: String) {
             register(module, CSVFetcher.readFromModule(module, itemPath + "itemid.csv"))
         }
@@ -339,8 +344,6 @@ object ModMgr {
         }
 
         private fun register(module: String, csv: List<CSVRecord>) {
-            Terrarum.itemCodex = ItemCodex()
-
             csv.forEach {
                 val className: String = it["classname"].toString()
                 val internalID: Int = it["id"].toInt()
@@ -353,14 +356,12 @@ object ModMgr {
                         val loadedClass = Class.forName(className)
                         val loadedClassConstructor = loadedClass.getConstructor(ItemID::class.java)
                         val loadedClassInstance = loadedClassConstructor.newInstance(itemName)
-
                         ItemCodex[itemName] = loadedClassInstance as GameItem
                     }
                     else {
                         val loadedClass = it.loadClass(className)
                         val loadedClassConstructor = loadedClass.getConstructor(ItemID::class.java)
                         val loadedClassInstance = loadedClassConstructor.newInstance(itemName)
-
                         ItemCodex[itemName] = loadedClassInstance as GameItem
                     }
                 }
@@ -379,8 +380,12 @@ object ModMgr {
     object GameMaterialLoader {
         val matePath = "materials/"
 
+        init {
+            Terrarum.materialCodex = MaterialCodex()
+        }
+
         @JvmStatic operator fun invoke(module: String) {
-            Terrarum.materialCodex = MaterialCodex(module, matePath + "materials.csv")
+            Terrarum.materialCodex.fromModule(module, matePath + "materials.csv")
         }
     }
 }
diff --git a/src/net/torvald/terrarum/blockproperties/BlockCodex.kt b/src/net/torvald/terrarum/blockproperties/BlockCodex.kt
index 1cdf2d42c..d480d1977 100644
--- a/src/net/torvald/terrarum/blockproperties/BlockCodex.kt
+++ b/src/net/torvald/terrarum/blockproperties/BlockCodex.kt
@@ -58,7 +58,7 @@ class BlockCodex {
     /**
      * Later entry (possible from other modules) will replace older ones
      */
-    internal constructor(module: String, path: String) : this() {
+    fun fromModule(module: String, path: String) {
         App.printmsg(this, "Building block properties table")
         try {
             register(module, CSVFetcher.readFromModule(module, path))
diff --git a/src/net/torvald/terrarum/blockproperties/WireCodex.kt b/src/net/torvald/terrarum/blockproperties/WireCodex.kt
index a73541794..7a96f7ff5 100644
--- a/src/net/torvald/terrarum/blockproperties/WireCodex.kt
+++ b/src/net/torvald/terrarum/blockproperties/WireCodex.kt
@@ -38,7 +38,7 @@ class WireCodex {
      * @param module name of the module
      * @param path to the "wires" directory, not path to the CSV; must end with a slash!
      */
-    internal constructor(module: String, path: String) : this() {
+    fun fromModule(module: String, path: String) {
         App.printmsg(this, "Building wire properties table for module $module")
         try {
             register(module, path, CSVFetcher.readFromModule(module, path + "wires.csv"))
diff --git a/src/net/torvald/terrarum/console/CommandDict.kt b/src/net/torvald/terrarum/console/CommandDict.kt
index cdea5d3d3..5b034b8b5 100644
--- a/src/net/torvald/terrarum/console/CommandDict.kt
+++ b/src/net/torvald/terrarum/console/CommandDict.kt
@@ -17,46 +17,50 @@ object CommandDict {
         printdbg(this, ModMgr.loadOrder.reversed())
         printdbg(this, ModMgr.loadOrder.reversed().map { ModMgr.moduleInfo[it]?.packageName })
 
-        (listOf("net.torvald.terrarum") + ModMgr.loadOrder.reversed().mapNotNull { ModMgr.moduleInfo[it]?.packageName }).forEach{ packageRoot ->
+        (listOf("net.torvald.terrarum") + ModMgr.loadOrder.reversed().mapNotNull { ModMgr.moduleInfo[it]?.packageName }).forEach { packageRoot ->
             printdbg(this, packageRoot)
             val packageConsole = "$packageRoot.console"
-            val stream = ClassLoader.getSystemClassLoader().getResourceAsStream(packageConsole.replace('.','/'))
-            val reader = BufferedReader(InputStreamReader(stream))
+            val stream = ClassLoader.getSystemClassLoader().getResourceAsStream(packageConsole.replace('.', '/'))
 
-            reader.lines()
-                    .filter{ it.endsWith(".class") && !it.contains('$') }
-                    .map { Class.forName("$packageConsole.${it.substring(0, it.lastIndexOf('.'))}") }
-                    .forEach {
+            if (stream != null) { // not all modules have extra console commands
 
-                        printdbg(this, "> Trying to instantiate ${it.canonicalName}")
+                val reader = BufferedReader(InputStreamReader(stream))
 
-                        try {
-                            val instance = it.kotlin.objectInstance ?: it.kotlin.java.newInstance()
+                reader.lines()
+                        .filter { it.endsWith(".class") && !it.contains('$') }
+                        .map { Class.forName("$packageConsole.${it.substring(0, it.lastIndexOf('.'))}") }
+                        .forEach {
 
-                            val aliases = instance.javaClass.getAnnotation(ConsoleAlias::class.java)?.aliasesCSV?.split(',')?.map { it.trim() }
-                            val noexport = instance.javaClass.getAnnotation(ConsoleNoExport::class.java)
+                            printdbg(this, "> Trying to instantiate ${it.canonicalName}")
 
-                            if (noexport == null) {
+                            try {
+                                val instance = it.kotlin.objectInstance ?: it.kotlin.java.newInstance()
 
-                                dict[instance.javaClass.simpleName.lowercase()] = instance as ConsoleCommand
-                                aliases?.forEach {
-                                    dict[it] = instance as ConsoleCommand
+                                val aliases = instance.javaClass.getAnnotation(ConsoleAlias::class.java)?.aliasesCSV?.split(',')?.map { it.trim() }
+                                val noexport = instance.javaClass.getAnnotation(ConsoleNoExport::class.java)
+
+                                if (noexport == null) {
+
+                                    dict[instance.javaClass.simpleName.lowercase()] = instance as ConsoleCommand
+                                    aliases?.forEach {
+                                        dict[it] = instance as ConsoleCommand
+                                    }
+
+                                    printdbg(this, "Class instantiated: ${instance.javaClass.simpleName}")
+                                    if (aliases != null)
+                                        printdbg(this, "  Annotations: $aliases")
                                 }
-
-                                printdbg(this, "Class instantiated: ${instance.javaClass.simpleName}")
-                                if (aliases != null)
-                                    printdbg(this, "  Annotations: $aliases")
+                            }
+                            catch (e: ClassCastException) {
+                                printdbgerr(this, "${it.canonicalName} is not a ConsoleCommand")
+                            }
+                            catch (e: InstantiationException) {
+                                printdbgerr(this, "Could not instantiate ${it.canonicalName}")
+                                e.printStackTrace(System.err)
                             }
                         }
-                        catch (e: ClassCastException) {
-                            printdbgerr(this, "${it.canonicalName} is not a ConsoleCommand")
-                        }
-                        catch (e: InstantiationException) {
-                            printdbgerr(this, "Could not instantiate ${it.canonicalName}")
-                            e.printStackTrace(System.err)
-                        }
-                    }
 
+            }
         }
 
 
diff --git a/src/net/torvald/terrarum/itemproperties/Material.kt b/src/net/torvald/terrarum/itemproperties/Material.kt
index d022cadf3..f38fb3ec4 100644
--- a/src/net/torvald/terrarum/itemproperties/Material.kt
+++ b/src/net/torvald/terrarum/itemproperties/Material.kt
@@ -1,11 +1,13 @@
 package net.torvald.terrarum.itemproperties
 
+import net.torvald.terrarum.App
 import net.torvald.terrarum.App.printmsg
 import net.torvald.terrarum.Codex
 import net.torvald.terrarum.blockproperties.floatVal
 import net.torvald.terrarum.blockproperties.intVal
 import net.torvald.terrarum.utils.CSVFetcher
 import org.apache.commons.csv.CSVRecord
+import java.io.IOException
 
 /**
  * To be used with items AND TILES (electricity resistance, thermal conductivity)
@@ -39,8 +41,12 @@ class MaterialCodex {
 
     internal constructor()
 
-    internal constructor(module: String, path: String) : this() {
-        register(CSVFetcher.readFromModule(module, path))
+    fun fromModule(module: String, path: String) {
+        App.printmsg(this, "Building material properties table")
+        try {
+            register(CSVFetcher.readFromModule(module, path))
+        }
+        catch (e: IOException) { e.printStackTrace() }
     }
 
     fun fromCSV(module: String, csvString: String) {
diff --git a/src/net/torvald/terrarum/modulebasegame/console/Inventory.kt b/src/net/torvald/terrarum/modulebasegame/console/Inventory.kt
index 3f0ca4813..3ea0fdd06 100644
--- a/src/net/torvald/terrarum/modulebasegame/console/Inventory.kt
+++ b/src/net/torvald/terrarum/modulebasegame/console/Inventory.kt
@@ -1,13 +1,12 @@
 package net.torvald.terrarum.modulebasegame.console
 
-import net.torvald.terrarum.Terrarum
+import net.torvald.terrarum.*
+import net.torvald.terrarum.Terrarum.PLAYER_REF_ID
 import net.torvald.terrarum.console.ConsoleCommand
 import net.torvald.terrarum.console.Echo
 import net.torvald.terrarum.console.EchoError
-import net.torvald.terrarum.gameitems.ItemID
-import net.torvald.terrarum.*
-import net.torvald.terrarum.Terrarum.PLAYER_REF_ID
 import net.torvald.terrarum.gameactors.ActorID
+import net.torvald.terrarum.gameitems.ItemID
 import net.torvald.terrarum.modulebasegame.gameactors.Pocketed
 
 /**
@@ -21,6 +20,9 @@ internal object Inventory : ConsoleCommand {
         if (args.size == 1) {
             printUsage()
         }
+        else if (args[1] == "target") {
+            targetID = if (args[2].lowercase() == "player") PLAYER_REF_ID else args[2].toInt()
+        }
         else {
             val actor = getActor()
             if (actor != null) {
@@ -28,7 +30,6 @@ internal object Inventory : ConsoleCommand {
                     "list"   -> listInventory(actor)
                     "add"    -> if (args.size > 3) addItem(actor, args[2], args[3].toInt()) else addItem(actor, args[2])
                     "remove" -> if (args.size > 3) removeItem(actor, args[2], args[3].toInt()) else removeItem(actor, args[2])
-                    "target" -> targetID = if (args[2].lowercase() == "player") PLAYER_REF_ID else args[2].toInt()
                     "equip"  -> equipItem(actor, args[2])
                     "unequip"-> unequipItem(actor, args[2])
                     else     -> printUsage()