diff --git a/common/src/main/java/org/embeddedt/modernfix/resources/PackResourcesCacheEngine.java b/common/src/main/java/org/embeddedt/modernfix/resources/PackResourcesCacheEngine.java
index 25cf6267..6bf1ec8f 100644
--- a/common/src/main/java/org/embeddedt/modernfix/resources/PackResourcesCacheEngine.java
+++ b/common/src/main/java/org/embeddedt/modernfix/resources/PackResourcesCacheEngine.java
@@ -8,6 +8,7 @@ import it.unimi.dsi.fastutil.objects.ObjectOpenHashSet;
 import net.minecraft.resources.ResourceLocation;
 import net.minecraft.server.packs.PackType;
 import org.embeddedt.modernfix.ModernFix;
+import org.embeddedt.modernfix.platform.ModernFixPlatformHooks;
 import org.embeddedt.modernfix.util.PackTypeHelper;
 
 import java.io.IOException;
@@ -163,6 +164,8 @@ public class PackResourcesCacheEngine {
     }
 
     public static void invalidate() {
+        if(!ModernFixPlatformHooks.isDevEnv())
+            return;
         synchronized (cachingPacks) {
             cachingPacks.keySet().forEach(pack -> {
                 if(pack != null)
diff --git a/forge/src/main/java/org/embeddedt/modernfix/forge/mixin/perf/resourcepacks/ModFileResourcePackMixin.java b/forge/src/main/java/org/embeddedt/modernfix/forge/mixin/perf/resourcepacks/ModFileResourcePackMixin.java
index d3bd9e08..b9d4f64d 100644
--- a/forge/src/main/java/org/embeddedt/modernfix/forge/mixin/perf/resourcepacks/ModFileResourcePackMixin.java
+++ b/forge/src/main/java/org/embeddedt/modernfix/forge/mixin/perf/resourcepacks/ModFileResourcePackMixin.java
@@ -78,7 +78,7 @@ public abstract class ModFileResourcePackMixin implements ICachingResourcePack {
     @Inject(method = "getResources", at = @At("HEAD"), cancellable = true)
     private void fastGetResources(PackType type, String resourceNamespace, String pathIn, Predicate<ResourceLocation> filter, CallbackInfoReturnable<Collection<ResourceLocation>> cir)
     {
-        if(!PackTypeHelper.isVanillaPackType(type) || this.cacheEngine == null)
+        if(!PackTypeHelper.isVanillaPackType(type))
             return;
         cir.setReturnValue(this.generateResourceCache().getResources(type, resourceNamespace, pathIn, Integer.MAX_VALUE, filter));
     }
diff --git a/forge/src/main/java/org/embeddedt/modernfix/platform/forge/ModernFixPlatformHooksImpl.java b/forge/src/main/java/org/embeddedt/modernfix/platform/forge/ModernFixPlatformHooksImpl.java
index 25174ffb..d6448b7a 100644
--- a/forge/src/main/java/org/embeddedt/modernfix/platform/forge/ModernFixPlatformHooksImpl.java
+++ b/forge/src/main/java/org/embeddedt/modernfix/platform/forge/ModernFixPlatformHooksImpl.java
@@ -19,12 +19,11 @@ import net.minecraftforge.fml.ModLoader;
 import net.minecraftforge.fml.loading.FMLLoader;
 import net.minecraftforge.fml.loading.FMLPaths;
 import net.minecraftforge.fml.loading.LoadingModList;
-import net.minecraftforge.fml.loading.moddiscovery.ExplodedDirectoryLocator;
+import net.minecraftforge.fml.loading.moddiscovery.ModInfo;
 import net.minecraftforge.network.PacketDistributor;
 import net.minecraftforge.server.ServerLifecycleHooks;
-import net.minecraftforge.fml.loading.moddiscovery.ModInfo;
-import org.embeddedt.modernfix.core.ModernFixMixinPlugin;
 import org.embeddedt.modernfix.api.constants.IntegrationConstants;
+import org.embeddedt.modernfix.core.ModernFixMixinPlugin;
 import org.embeddedt.modernfix.forge.classloading.FastAccessTransformerList;
 import org.embeddedt.modernfix.forge.packet.PacketHandler;
 import org.embeddedt.modernfix.util.DummyList;
@@ -63,7 +62,7 @@ public class ModernFixPlatformHooksImpl {
     }
 
     public static boolean isDevEnv() {
-        return !FMLLoader.isProduction() && FMLLoader.getLoadingModList().getModFileById("modernfix").getFile().getProvider() instanceof ExplodedDirectoryLocator;
+        return !FMLLoader.isProduction();
     }
 
     public static MinecraftServer getCurrentServer() {