diff --git a/src/runtime/java/badasintended/megane/runtime/data/block/BlockData.java b/src/runtime/java/badasintended/megane/runtime/data/block/BlockData.java
index 91e10ee..e2df9a2 100644
--- a/src/runtime/java/badasintended/megane/runtime/data/block/BlockData.java
+++ b/src/runtime/java/badasintended/megane/runtime/data/block/BlockData.java
@@ -3,18 +3,28 @@
 import java.util.function.Supplier;
 
 import badasintended.megane.config.MeganeConfig;
+import badasintended.megane.runtime.registry.Registry;
 import mcp.mobius.waila.api.IServerDataProvider;
 import net.minecraft.block.entity.BlockEntity;
 import net.minecraft.nbt.CompoundTag;
 import net.minecraft.server.network.ServerPlayerEntity;
-import net.minecraft.util.registry.Registry;
+import net.minecraft.util.math.BlockPos;
 import net.minecraft.world.World;
 
+import static badasintended.megane.util.MeganeUtils.LOGGER;
+import static net.minecraft.util.registry.Registry.BLOCK;
+
 public abstract class BlockData implements IServerDataProvider<BlockEntity> {
 
+    private final Registry<?> registry;
     private final Supplier<MeganeConfig.Base> baseConfig;
 
     public BlockData(Supplier<MeganeConfig.Base> baseConfig) {
+        this(null, baseConfig);
+    }
+
+    public BlockData(Registry<?> registry, Supplier<MeganeConfig.Base> baseConfig) {
+        this.registry = registry;
         this.baseConfig = baseConfig;
     }
 
@@ -22,11 +32,21 @@ public BlockData(Supplier<MeganeConfig.Base> baseConfig) {
 
     @Override
     public final void appendServerData(CompoundTag data, ServerPlayerEntity player, World world, BlockEntity blockEntity) {
-        if (!baseConfig.get().isEnabled() || baseConfig.get().getBlacklist().contains(Registry.BLOCK.getId(blockEntity.getCachedState().getBlock()))) {
+        if (!baseConfig.get().isEnabled() || baseConfig.get().getBlacklist().contains(BLOCK.getId(blockEntity.getCachedState().getBlock()))) {
             return;
         }
 
-        append(data, player, world, blockEntity);
+        try {
+            append(data, player, world, blockEntity);
+        } catch (Exception e) {
+            BlockPos pos = blockEntity.getPos();
+            LOGGER.error("Something went wrong when retrieving data for {} at ({}, {}, {})", blockEntity.getClass().getName(), pos.getX(), pos.getY(), pos.getZ());
+            LOGGER.error("Stacktrace:", e);
+
+            if (registry != null) {
+                registry.error(blockEntity);
+            }
+        }
     }
 
 }
diff --git a/src/runtime/java/badasintended/megane/runtime/data/block/BlockInventoryData.java b/src/runtime/java/badasintended/megane/runtime/data/block/BlockInventoryData.java
index 525ddd0..1512cec 100644
--- a/src/runtime/java/badasintended/megane/runtime/data/block/BlockInventoryData.java
+++ b/src/runtime/java/badasintended/megane/runtime/data/block/BlockInventoryData.java
@@ -23,7 +23,7 @@
 public class BlockInventoryData extends BlockData {
 
     public BlockInventoryData() {
-        super(() -> config().inventory);
+        super(Registrar.INVENTORY, () -> config().inventory);
     }
 
     @Override
diff --git a/src/runtime/java/badasintended/megane/runtime/data/block/EnergyData.java b/src/runtime/java/badasintended/megane/runtime/data/block/EnergyData.java
index a28956b..31cb11a 100644
--- a/src/runtime/java/badasintended/megane/runtime/data/block/EnergyData.java
+++ b/src/runtime/java/badasintended/megane/runtime/data/block/EnergyData.java
@@ -17,7 +17,7 @@
 public class EnergyData extends BlockData {
 
     public EnergyData() {
-        super(() -> config().energy);
+        super(Registrar.ENERGY, () -> config().energy);
     }
 
     @Override
diff --git a/src/runtime/java/badasintended/megane/runtime/data/block/FluidData.java b/src/runtime/java/badasintended/megane/runtime/data/block/FluidData.java
index a632ee5..a63b941 100644
--- a/src/runtime/java/badasintended/megane/runtime/data/block/FluidData.java
+++ b/src/runtime/java/badasintended/megane/runtime/data/block/FluidData.java
@@ -21,7 +21,7 @@
 public class FluidData extends BlockData {
 
     public FluidData() {
-        super(() -> config().fluid);
+        super(Registrar.FLUID, () -> config().fluid);
     }
 
     @Override
diff --git a/src/runtime/java/badasintended/megane/runtime/data/block/ProgressData.java b/src/runtime/java/badasintended/megane/runtime/data/block/ProgressData.java
index fa06c2f..79e417c 100644
--- a/src/runtime/java/badasintended/megane/runtime/data/block/ProgressData.java
+++ b/src/runtime/java/badasintended/megane/runtime/data/block/ProgressData.java
@@ -27,7 +27,7 @@
 public class ProgressData extends BlockData {
 
     public ProgressData() {
-        super(() -> config().progress);
+        super(Registrar.PROGRESS, () -> config().progress);
     }
 
     @Override
diff --git a/src/runtime/java/badasintended/megane/runtime/data/entity/EntityData.java b/src/runtime/java/badasintended/megane/runtime/data/entity/EntityData.java
index 7b9398b..f8f82ca 100644
--- a/src/runtime/java/badasintended/megane/runtime/data/entity/EntityData.java
+++ b/src/runtime/java/badasintended/megane/runtime/data/entity/EntityData.java
@@ -3,18 +3,28 @@
 import java.util.function.Supplier;
 
 import badasintended.megane.config.MeganeConfig;
+import badasintended.megane.runtime.registry.Registry;
 import mcp.mobius.waila.api.IServerDataProvider;
 import net.minecraft.entity.LivingEntity;
 import net.minecraft.nbt.CompoundTag;
 import net.minecraft.server.network.ServerPlayerEntity;
-import net.minecraft.util.registry.Registry;
+import net.minecraft.util.math.Vec3d;
 import net.minecraft.world.World;
 
+import static badasintended.megane.util.MeganeUtils.LOGGER;
+import static net.minecraft.util.registry.Registry.ENTITY_TYPE;
+
 public abstract class EntityData implements IServerDataProvider<LivingEntity> {
 
+    private final Registry<?> registry;
     private final Supplier<MeganeConfig.Base> baseConfig;
 
     public EntityData(Supplier<MeganeConfig.Base> baseConfig) {
+        this(null, baseConfig);
+    }
+
+    public EntityData(Registry<?> registry, Supplier<MeganeConfig.Base> baseConfig) {
+        this.registry = registry;
         this.baseConfig = baseConfig;
     }
 
@@ -22,11 +32,21 @@ public EntityData(Supplier<MeganeConfig.Base> baseConfig) {
 
     @Override
     public final void appendServerData(CompoundTag data, ServerPlayerEntity player, World world, LivingEntity entity) {
-        if (!baseConfig.get().isEnabled() || baseConfig.get().getBlacklist().contains(Registry.ENTITY_TYPE.getId(entity.getType()))) {
+        if (!baseConfig.get().isEnabled() || baseConfig.get().getBlacklist().contains(ENTITY_TYPE.getId(entity.getType()))) {
             return;
         }
 
-        append(data, player, world, entity);
+        try {
+            append(data, player, world, entity);
+        } catch (Exception e) {
+            Vec3d pos = entity.getPos();
+            LOGGER.error("Something went wrong when retrieving data for {} at ({}, {}, {})", entity.getClass().getName(), pos.getX(), pos.getY(), pos.getZ());
+            LOGGER.error("Stacktrace:", e);
+
+            if (registry != null) {
+                registry.error(entity);
+            }
+        }
     }
 
 }
diff --git a/src/runtime/java/badasintended/megane/runtime/data/entity/EntityInventoryData.java b/src/runtime/java/badasintended/megane/runtime/data/entity/EntityInventoryData.java
index 3f60931..097c4d8 100644
--- a/src/runtime/java/badasintended/megane/runtime/data/entity/EntityInventoryData.java
+++ b/src/runtime/java/badasintended/megane/runtime/data/entity/EntityInventoryData.java
@@ -23,7 +23,7 @@
 public class EntityInventoryData extends EntityData {
 
     public EntityInventoryData() {
-        super(() -> config().entityInventory);
+        super(Registrar.INVENTORY, () -> config().entityInventory);
     }
 
     @Override
diff --git a/src/runtime/java/badasintended/megane/runtime/registry/Registry.java b/src/runtime/java/badasintended/megane/runtime/registry/Registry.java
index 7e0b69a..b7a3564 100644
--- a/src/runtime/java/badasintended/megane/runtime/registry/Registry.java
+++ b/src/runtime/java/badasintended/megane/runtime/registry/Registry.java
@@ -1,8 +1,10 @@
 package badasintended.megane.runtime.registry;
 
 import java.util.Comparator;
+import java.util.HashSet;
 import java.util.List;
 import java.util.Map;
+import java.util.Set;
 
 import it.unimi.dsi.fastutil.objects.Object2ObjectOpenHashMap;
 import it.unimi.dsi.fastutil.objects.ObjectArrayList;
@@ -16,6 +18,8 @@ public class Registry<T> {
 
     private final List<Entry<?>> sorter = new ObjectArrayList<>();
 
+    private final Set<Class<?>> error = new HashSet<>();
+
     public void add(Class<?> key, T val, int priority) {
         map.computeIfAbsent(key, k -> new ObjectArrayList<>())
             .add(new Entry<>(val, priority));
@@ -25,6 +29,13 @@ public void add(Object key, T val) {
         objMap.put(key, ObjectLists.singleton(val));
     }
 
+    public void error(Object obj) {
+        Class<?> clazz = obj.getClass();
+        error.add(clazz);
+        cache.remove(clazz);
+        map.remove(clazz);
+    }
+
     @SuppressWarnings("unchecked")
     public List<T> get(Object obj) {
         if (objMap.containsKey(obj)) {
@@ -36,7 +47,7 @@ public List<T> get(Object obj) {
         }
 
         Class<?> clazz = obj.getClass();
-        if (clazz == Object.class) {
+        if (clazz == Object.class || error.contains(clazz)) {
             return ObjectLists.emptyList();
         }