diff --git a/build.gradle b/build.gradle
index e2d68cc020..5651870151 100644
--- a/build.gradle
+++ b/build.gradle
@@ -27,7 +27,7 @@ allprojects {
         appName = 'Mindustry'
         gdxVersion = '1.9.8'
         roboVMVersion = '2.3.0'
-        uCoreVersion = '115a42ff7d5bca0a6073b5f1e0b67cc4464c560e'
+        uCoreVersion = '1a357ce1714f20663ec1680f64f4ff43631de07d'
 
         getVersionString = {
             String buildVersion = getBuildVersion()
@@ -92,7 +92,7 @@ project(":desktop") {
     dependencies {
         compile project(":core")
         compile project(":kryonet")
-        if(new File(projectDir.parent, '../debug').exists()) compile project(":debug")
+        if(new File(projectDir.parent, '../debug').exists() && System.properties["release"] == null) compile project(":debug")
 
         compile "com.badlogicgames.gdx:gdx-backend-lwjgl3:$gdxVersion"
         compile "com.badlogicgames.gdx:gdx-platform:$gdxVersion:natives-desktop"
diff --git a/core/src/Mindustry.gwt.xml b/core/src/Mindustry.gwt.xml
index d6cae53798..828369ac80 100644
--- a/core/src/Mindustry.gwt.xml
+++ b/core/src/Mindustry.gwt.xml
@@ -13,6 +13,8 @@
     <extend-configuration-property name="gdx.reflect.include" value="io.anuke.mindustry.entities.effect"/>
     <extend-configuration-property name="gdx.reflect.include" value="io.anuke.mindustry.entities.bullet.Bullet"/>
     <extend-configuration-property name="gdx.reflect.include" value="io.anuke.mindustry.game.Team"/>
+    <extend-configuration-property name="gdx.reflect.include" value="io.anuke.mindustry.maps.missions.Mission"/>
+    <extend-configuration-property name="gdx.reflect.include" value="io.anuke.mindustry.type.Item"/>
     <extend-configuration-property name="gdx.reflect.include" value="io.anuke.mindustry.world.meta.BlockBar"/>
     <extend-configuration-property name="gdx.reflect.include" value="io.anuke.mindustry.maps.generation.WorldGenerator"/>
     <extend-configuration-property name="gdx.reflect.include" value="io.anuke.mindustry.entities.StatusController"/>
diff --git a/core/src/io/anuke/mindustry/entities/units/GroundUnit.java b/core/src/io/anuke/mindustry/entities/units/GroundUnit.java
index 2ce4171a44..e9dd5628ef 100644
--- a/core/src/io/anuke/mindustry/entities/units/GroundUnit.java
+++ b/core/src/io/anuke/mindustry/entities/units/GroundUnit.java
@@ -78,7 +78,10 @@ public abstract class GroundUnit extends BaseUnit{
     },
     patrol = new UnitState(){
         public void update(){
-            //TODO
+            target = getClosestCore();
+            if(target != null){
+                //circle(60f + Mathf.absin(Timers.time() + id*23525, 70f, 1200f));
+            }
         }
     },
     retreat = new UnitState(){
diff --git a/desktop/build.gradle b/desktop/build.gradle
index 1c0e693bea..6e1edc8d82 100644
--- a/desktop/build.gradle
+++ b/desktop/build.gradle
@@ -98,6 +98,7 @@ task packrCmd() {
                     "--jdk", PACKR_DIR + "jdk-" + getPlatform() + ".zip",
                     "--icon", ICON_DIR.getAbsolutePath(),
                     "--vmargs", (getPlatform().equals("mac") ? "XstartOnFirstThread" : "Xms256m"),
+                    "Djava.net.preferIPv4Stack=true",
                     "--classpath", "--", PACKR_DIR + "config.json")
         }
     }