diff --git a/core/src/mindustry/game/Schematics.java b/core/src/mindustry/game/Schematics.java
index 2333f83d45..f46c50f00e 100644
--- a/core/src/mindustry/game/Schematics.java
+++ b/core/src/mindustry/game/Schematics.java
@@ -59,7 +59,7 @@ public class Schematics implements Loadable{
     private ObjectSet<Schematic> errored = new ObjectSet<>();
     private ObjectMap<CoreBlock, Seq<Schematic>> loadouts = new ObjectMap<>();
     private ObjectMap<CoreBlock, Schematic> defaultLoadouts = new ObjectMap<>();
-    private FrameBuffer shadowBuffer;
+    private @Nullable FrameBuffer shadowBuffer;
     private Texture errorTexture;
     private long lastClearTime;
 
@@ -99,7 +99,14 @@ public class Schematics implements Loadable{
         all.sort();
 
         if(shadowBuffer == null && !headless){
-            Core.app.post(() -> shadowBuffer = new FrameBuffer(maxSchematicSize + padding + 8, maxSchematicSize + padding + 8));
+            Core.app.post(() -> {
+                try{
+                    shadowBuffer = new FrameBuffer(maxSchematicSize + padding + 8, maxSchematicSize + padding + 8);
+                }catch(Exception e){
+                    Log.err(Strings.format("Failed to create shadow buffer (@x@): @. This is likely because a mod is setting maxSchematicSize too high. Don't do that.",
+                    maxSchematicSize + padding + 8, maxSchematicSize + padding + 8, Strings.getSimpleMessage(e)));
+                }
+            });
         }
     }
 
@@ -215,35 +222,39 @@ public class Schematics implements Loadable{
             Tmp.m2.set(Draw.trans());
             FrameBuffer buffer = new FrameBuffer((schematic.width + padding) * resolution, (schematic.height + padding) * resolution);
 
-            shadowBuffer.begin(Color.clear);
+            if(shadowBuffer != null){
+                shadowBuffer.begin(Color.clear);
 
-            Draw.trans().idt();
-            Draw.proj().setOrtho(0, 0, shadowBuffer.getWidth(), shadowBuffer.getHeight());
+                Draw.trans().idt();
+                Draw.proj().setOrtho(0, 0, shadowBuffer.getWidth(), shadowBuffer.getHeight());
 
-            Draw.color();
-            schematic.tiles.each(t -> {
-                int size = t.block.size;
-                int offsetx = -(size - 1) / 2;
-                int offsety = -(size - 1) / 2;
-                for(int dx = 0; dx < size; dx++){
-                    for(int dy = 0; dy < size; dy++){
-                        int wx = t.x + dx + offsetx;
-                        int wy = t.y + dy + offsety;
-                        Fill.square(padding/2f + wx + 0.5f, padding/2f + wy + 0.5f, 0.5f);
+                Draw.color();
+                schematic.tiles.each(t -> {
+                    int size = t.block.size;
+                    int offsetx = -(size - 1) / 2;
+                    int offsety = -(size - 1) / 2;
+                    for(int dx = 0; dx < size; dx++){
+                        for(int dy = 0; dy < size; dy++){
+                            int wx = t.x + dx + offsetx;
+                            int wy = t.y + dy + offsety;
+                            Fill.square(padding/2f + wx + 0.5f, padding/2f + wy + 0.5f, 0.5f);
+                        }
                     }
-                }
-            });
+                });
 
-            shadowBuffer.end();
+                shadowBuffer.end();
+            }
 
             buffer.begin(Color.clear);
 
             Draw.proj().setOrtho(0, buffer.getHeight(), buffer.getWidth(), -buffer.getHeight());
 
-            Tmp.tr1.set(shadowBuffer.getTexture(), 0, 0, schematic.width + padding, schematic.height + padding);
-            Draw.color(0f, 0f, 0f, 1f);
-            Draw.rect(Tmp.tr1, buffer.getWidth()/2f, buffer.getHeight()/2f, buffer.getWidth(), -buffer.getHeight());
-            Draw.color();
+            if(shadowBuffer != null){
+                Tmp.tr1.set(shadowBuffer.getTexture(), 0, 0, schematic.width + padding, schematic.height + padding);
+                Draw.color(0f, 0f, 0f, 1f);
+                Draw.rect(Tmp.tr1, buffer.getWidth()/2f, buffer.getHeight()/2f, buffer.getWidth(), -buffer.getHeight());
+                Draw.color();
+            }
 
             Seq<BuildPlan> plans = schematic.tiles.map(t -> new BuildPlan(t.x, t.y, t.rotation, t.block, t.config));
 
@@ -473,10 +484,6 @@ public class Schematics implements Loadable{
             if(check && !(st.block instanceof CoreBlock)){
                 seq.clear();
                 tile.getLinkedTilesAs(st.block, seq);
-                //remove env blocks, or not?
-                //if(seq.contains(t -> !t.block().alwaysReplace && !t.synthetic())){
-                //    return;
-                //}
                 for(var t : seq){
                     if(t.block() != Blocks.air){
                         t.remove();