diff --git a/core/assets/maps/onset.msav b/core/assets/maps/onset.msav
index 42cf184789..9ea9f672f9 100644
Binary files a/core/assets/maps/onset.msav and b/core/assets/maps/onset.msav differ
diff --git a/core/src/mindustry/content/SerpuloTechTree.java b/core/src/mindustry/content/SerpuloTechTree.java
index 504a0d2724..8603d2bed2 100644
--- a/core/src/mindustry/content/SerpuloTechTree.java
+++ b/core/src/mindustry/content/SerpuloTechTree.java
@@ -42,9 +42,7 @@ public class SerpuloTechTree{
                             node(titaniumConveyor, Seq.with(new SectorComplete(craters)), () -> {
                                 node(phaseConveyor, () -> {
                                     node(massDriver, () -> {
-                                        node(payloadPropulsionTower, () -> {
 
-                                        });
                                     });
                                 });
 
diff --git a/core/src/mindustry/editor/MapEditorDialog.java b/core/src/mindustry/editor/MapEditorDialog.java
index 0fd6fcca25..0d714263bc 100644
--- a/core/src/mindustry/editor/MapEditorDialog.java
+++ b/core/src/mindustry/editor/MapEditorDialog.java
@@ -293,6 +293,12 @@ public class MapEditorDialog extends Dialog implements Disposable{
 
         player.clearUnit();
 
+        //remove player unit
+        Unit unit = Groups.unit.find(u -> u.spawnedByCore);
+        if(unit != null){
+            unit.remove();
+        }
+
         Map returned = null;
 
         if(name.isEmpty()){