diff --git a/core/src/mindustry/editor/data/MapContentView.java b/core/src/mindustry/editor/data/MapContentView.java
index e05535436f..224e8b4afb 100644
--- a/core/src/mindustry/editor/data/MapContentView.java
+++ b/core/src/mindustry/editor/data/MapContentView.java
@@ -82,7 +82,7 @@ public class MapContentView implements AssetView{
                 list.add().size(h);
             }
 
-            list.button(content.content instanceof UnlockableContent u && (u.uiIcon.found() || u.fullIcon.found()) ? new TextureRegionDrawable(u.uiIcon.found() ? u.uiIcon : u.fullIcon) :
+            list.button(content.content instanceof UnlockableContent u && u.uiIcon != null && (u.uiIcon.found() || u.fullIcon.found()) ? new TextureRegionDrawable(u.uiIcon.found() ? u.uiIcon : u.fullIcon) :
                 contentIcons.get(content.type, Icon.warning), Styles.graySquarei, iconMed, () -> {}).touchable(Touchable.disabled).size(h);
 
             list.button(("[accent]" + content.name + "\n") + "[lightgray]" + Core.bundle.get("content." + content.type), Styles.grayt, () -> {
diff --git a/core/src/mindustry/io/TypeIO.java b/core/src/mindustry/io/TypeIO.java
index 5f3f4cfd76..001791450a 100644
--- a/core/src/mindustry/io/TypeIO.java
+++ b/core/src/mindustry/io/TypeIO.java
@@ -630,6 +630,12 @@ public class TypeIO{
             int x = read.us();
             int y = read.us();
             Block block = Vars.content.block(read.us());
+            if(block == null){
+                // Skip unrecognised block IDs (e.g. from a modded client)
+                read.b(); // consume rotation byte
+                readClientPlanConfig(read); // consume config
+                continue;
+            }
             int rotation = (block.rotate ? read.b() : 0);
             Object config = readClientPlanConfig(read);
             BuildPlan plan = new BuildPlan(x, y, rotation, block, config);
diff --git a/core/src/mindustry/mod/DataPatcher.java b/core/src/mindustry/mod/DataPatcher.java
index 2ac173fc97..773ccfdf11 100644
--- a/core/src/mindustry/mod/DataPatcher.java
+++ b/core/src/mindustry/mod/DataPatcher.java
@@ -197,13 +197,6 @@ public class DataPatcher{
 
             parser.finishParsing();
 
-            for(var errored : dpMod.erroredContent){
-                if(errored.minfo.error != null && errored.minfo.asset != null){
-                    errored.minfo.asset.warnings.add(errored.minfo.error);
-                }
-                Vars.content.remove(errored);
-            }
-
             addedContent.clear();
             Seq<Content> all = addedContent;
 
@@ -211,6 +204,13 @@ public class DataPatcher{
                 all.addAll(arr.select(c -> c.minfo.mod == dpMod));
             }
 
+            for(var errored : dpMod.erroredContent){
+                if(errored.minfo.error != null && errored.minfo.asset != null){
+                    errored.minfo.asset.warnings.add(errored.minfo.error);
+                }
+                Vars.content.remove(errored);
+            }
+
             for(var cont : all){
                 try{
                     cont.init();
diff --git a/core/src/mindustry/world/blocks/logic/LogicBlock.java b/core/src/mindustry/world/blocks/logic/LogicBlock.java
index 42b5ef55ee..31c86b1bd2 100644
--- a/core/src/mindustry/world/blocks/logic/LogicBlock.java
+++ b/core/src/mindustry/world/blocks/logic/LogicBlock.java
@@ -575,6 +575,8 @@ public class LogicBlock extends Block{
         }
 
         public void updateLinks(){
+            if(linksVar == null) return;
+
             int valids = links.count(l -> l.valid);
             executor.links = new Building[valids];
             executor.linkIds.clear();