Display content in mod error

core/src/io/anuke/mindustry/core/ContentLoader.java

@@ -7,6 +7,7 @@ import io.anuke.arc.util.*;
 import io.anuke.mindustry.content.*;
 import io.anuke.mindustry.ctype.*;
 import io.anuke.mindustry.entities.bullet.*;
+import io.anuke.mindustry.mod.Mods.*;
 import io.anuke.mindustry.type.*;
 import io.anuke.mindustry.world.*;
 
@@ -113,7 +114,7 @@ public class ContentLoader{
                     callable.accept(content);
                 }catch(Throwable e){
                     if(content.mod != null){
-                        mods.handleError(e, content.mod);
+                        mods.handleError(new ModLoadException(content, e), content.mod);
                     }else{
                         throw new RuntimeException(e);
                     }

core/src/io/anuke/mindustry/mod/Mods.java

@@ -567,5 +567,13 @@ public class Mods implements Loadable{
                 this.mod = content.mod;
             }
         }
+
+        public ModLoadException(@Nullable Content content, Throwable cause){
+            super(cause);
+            this.content = content;
+            if(content != null){
+                this.mod = content.mod;
+            }
+        }
     }
 }

core/src/io/anuke/mindustry/type/Mech.java

@@ -4,6 +4,7 @@ import io.anuke.arc.Core;
 import io.anuke.arc.graphics.Color;
 import io.anuke.arc.graphics.g2d.TextureRegion;
 import io.anuke.arc.scene.ui.layout.Table;
+import io.anuke.arc.util.ArcAnnotate.*;
 import io.anuke.mindustry.entities.type.Player;
 import io.anuke.mindustry.ctype.UnlockableContent;
 import io.anuke.mindustry.graphics.Pal;
@@ -31,7 +32,7 @@ public class Mech extends UnlockableContent{
     public float compoundSpeed, compoundSpeedBoost;
 
     public float weaponOffsetX, weaponOffsetY, engineOffset = 5f, engineSize = 2.5f;
-    public Weapon weapon;
+    public @NonNull Weapon weapon;
 
     public TextureRegion baseRegion, legRegion, region;