Fixed the crafting issue - it was fairly silly, actually

src/main/java/mekanism/client/ClientProxy.java

@@ -607,11 +607,11 @@ public class ClientProxy extends CommonProxy
 	}
 
 	@Override
-	public void onConfigSync()
+	public void onConfigSync(boolean fromPacket)
 	{
-		super.onConfigSync();
+		super.onConfigSync(fromPacket);
 
-		if(general.voiceServerEnabled && MekanismClient.voiceClient != null)
+		if(fromPacket && general.voiceServerEnabled && MekanismClient.voiceClient != null)
 		{
 			MekanismClient.voiceClient.start();
 		}

src/main/java/mekanism/common/CommonProxy.java

@@ -541,19 +541,9 @@ public class CommonProxy
 	{
 		return (File)FMLInjectionData.data()[6];
 	}
-
-	public void onConfigSync()
+	
+	public void updateConfigRecipes()
 	{
-		if(general.cardboardSpawners)
-		{
-			MekanismAPI.removeBoxBlacklist(Blocks.mob_spawner, 0);
-		}
-		else {
-			MekanismAPI.addBoxBlacklist(Blocks.mob_spawner, 0);
-		}
-		
-		MachineType.updateAllUsages();
-		
 		for(MachineType type : MachineType.getValidMachines())
 		{
 			if(machines.isEnabled(type))
@@ -565,8 +555,26 @@ public class CommonProxy
 				CraftingManager.getInstance().getRecipeList().removeAll(type.getRecipes());
 			}
 		}
+	}
 
-		Mekanism.logger.info("Received config from server.");
+	public void onConfigSync(boolean fromPacket)
+	{
+		if(general.cardboardSpawners)
+		{
+			MekanismAPI.removeBoxBlacklist(Blocks.mob_spawner, 0);
+		}
+		else {
+			MekanismAPI.addBoxBlacklist(Blocks.mob_spawner, 0);
+		}
+		
+		MachineType.updateAllUsages();
+		
+		updateConfigRecipes();
+
+		if(fromPacket)
+		{
+			Mekanism.logger.info("Received config from server.");
+		}
 	}
 
 	public EntityPlayer getPlayer(MessageContext context)

src/main/java/mekanism/common/Mekanism.java

@@ -1185,7 +1185,7 @@ public class Mekanism
 		
 		//Load configuration
 		proxy.loadConfiguration();
-		proxy.onConfigSync();
+		proxy.onConfigSync(false);
 		
 		//Add baby skeleton spawner
 		if(general.spawnBabySkeletons)
@@ -1233,6 +1233,9 @@ public class Mekanism
 		
 		OreDictManager.init();
 		
+		//Update the config-dependent recipes after the recipes have actually been added in the first place
+		Mekanism.proxy.updateConfigRecipes();
+		
 		logger.info("Hooking complete.");
 	}
 	
@@ -1365,7 +1368,7 @@ public class Mekanism
 		if(event.modID.equals("Mekanism"))
 		{
 			proxy.loadConfiguration();
-			proxy.onConfigSync();
+			proxy.onConfigSync(false);
 		}
 	}
 }

src/main/java/mekanism/common/network/PacketConfigSync.java

@@ -158,7 +158,7 @@ public class PacketConfigSync implements IMessageHandler<ConfigSyncMessage, IMes
 				e.printStackTrace();
 			}
 	
-			Mekanism.proxy.onConfigSync();
+			Mekanism.proxy.onConfigSync(true);
 		}
 	}
 }