diff --git a/LaunchServer/src/main/java/ru/gravit/launchserver/ProguardConf.java b/LaunchServer/src/main/java/ru/gravit/launchserver/ProguardConf.java
index 6cffd62b..7342582c 100644
--- a/LaunchServer/src/main/java/ru/gravit/launchserver/ProguardConf.java
+++ b/LaunchServer/src/main/java/ru/gravit/launchserver/ProguardConf.java
@@ -1,8 +1,8 @@
 package ru.gravit.launchserver;
 
+import java.io.BufferedReader;
+import java.io.BufferedWriter;
 import java.io.IOException;
-import java.io.InputStream;
-import java.io.OutputStream;
 import java.io.OutputStreamWriter;
 import java.io.PrintWriter;
 import java.nio.file.Files;
@@ -10,9 +10,13 @@
 import java.security.SecureRandom;
 import java.util.ArrayList;
 
+import ru.gravit.launcher.serialize.config.TextConfigReader;
+import ru.gravit.launcher.serialize.config.TextConfigWriter;
+import ru.gravit.launcher.serialize.config.entry.BlockConfigEntry;
 import ru.gravit.utils.helper.IOHelper;
 import ru.gravit.utils.helper.LogHelper;
 import ru.gravit.utils.helper.SecurityHelper;
+import ru.gravit.utils.helper.UnpackHelper;
 
 public class ProguardConf {
     private static final String charsFirst = "aAbBcCdDeEfFgGhHiIjJkKlLmMnNoOpPqQrRsStTuUvVwWxXyYzZ";
@@ -50,16 +54,12 @@ public ProguardConf(LaunchServer srv) {
     private void genConfig(boolean force) throws IOException {
         if (IOHelper.exists(config) && !force) return;
         Files.deleteIfExists(config);
-        config.toFile().createNewFile();
-        try (OutputStream out = IOHelper.newOutput(config); InputStream in = IOHelper.newInput(IOHelper.getResourceURL("ru/gravit/launchserver/defaults/proguard.cfg"))) {
-            IOHelper.transfer(in, out);
-        }
+        UnpackHelper.unpack(IOHelper.getResourceURL("ru/gravit/launchserver/defaults/proguard.cfg"), config);
     }
 
     public void genWords(boolean force) throws IOException {
         if (IOHelper.exists(words) && !force) return;
         Files.deleteIfExists(words);
-        words.toFile().createNewFile();
         SecureRandom rand = SecurityHelper.newRandom();
         rand.setSeed(SecureRandom.getSeed(32));
         try (PrintWriter out = new PrintWriter(new OutputStreamWriter(IOHelper.newOutput(words), IOHelper.UNICODE_CHARSET))) {
diff --git a/LaunchServer/src/main/java/ru/gravit/launchserver/binary/BuildContext.java b/LaunchServer/src/main/java/ru/gravit/launchserver/binary/BuildContext.java
index 49a9e669..0e3028cf 100644
--- a/LaunchServer/src/main/java/ru/gravit/launchserver/binary/BuildContext.java
+++ b/LaunchServer/src/main/java/ru/gravit/launchserver/binary/BuildContext.java
@@ -29,7 +29,7 @@ public void pushFile(String filename, InputStream inputStream) throws IOExceptio
     public void pushJarFile(ZipInputStream input) throws IOException {
         ZipEntry e = input.getNextEntry();
         while (e != null) {
-            output.putNextEntry(e);
+            output.putNextEntry(IOHelper.newZipEntry(e));
             IOHelper.transfer(input, output);
             e = input.getNextEntry();
         }
@@ -42,7 +42,7 @@ public void pushJarFile(ZipInputStream input, Set<String> blacklist) throws IOEx
                 e = input.getNextEntry();
                 continue;
             }
-            output.putNextEntry(e);
+            output.putNextEntry(IOHelper.newZipEntry(e));
             IOHelper.transfer(input, output);
             e = input.getNextEntry();
         }
diff --git a/LaunchServer/src/main/java/ru/gravit/launchserver/binary/JARLauncherBinary.java b/LaunchServer/src/main/java/ru/gravit/launchserver/binary/JARLauncherBinary.java
index 79d2f843..63c9d800 100644
--- a/LaunchServer/src/main/java/ru/gravit/launchserver/binary/JARLauncherBinary.java
+++ b/LaunchServer/src/main/java/ru/gravit/launchserver/binary/JARLauncherBinary.java
@@ -41,6 +41,7 @@
 import ru.gravit.utils.helper.SecurityHelper.DigestAlgorithm;
 import ru.gravit.utils.helper.UnpackHelper;
 
+// TODO: exclusions impl
 public final class JARLauncherBinary extends LauncherBinary {
 
 	private final class RuntimeDirVisitor extends SimpleFileVisitor<Path> {
diff --git a/LaunchServer/src/main/java/ru/gravit/launchserver/command/basic/ProguardCleanCommand.java b/LaunchServer/src/main/java/ru/gravit/launchserver/command/basic/ProguardCleanCommand.java
index 704f1c6d..b2dd5014 100644
--- a/LaunchServer/src/main/java/ru/gravit/launchserver/command/basic/ProguardCleanCommand.java
+++ b/LaunchServer/src/main/java/ru/gravit/launchserver/command/basic/ProguardCleanCommand.java
@@ -1,5 +1,8 @@
 package ru.gravit.launchserver.command.basic;
 
+import java.io.IOException;
+import java.nio.file.Files;
+
 import ru.gravit.launchserver.LaunchServer;
 import ru.gravit.launchserver.command.Command;
 
@@ -19,7 +22,8 @@ public String getUsageDescription() {
     }
 
     @Override
-    public void invoke(String... args) {
+    public void invoke(String... args) throws IOException {
         server.proguardConf.prepare(true);
+        Files.deleteIfExists(server.proguardConf.mappings);
     }
 }
diff --git a/LaunchServer/src/main/resources/ru/gravit/launchserver/defaults/proguard.cfg b/LaunchServer/src/main/resources/ru/gravit/launchserver/defaults/proguard.cfg
index c08bbda3..1776cd74 100644
--- a/LaunchServer/src/main/resources/ru/gravit/launchserver/defaults/proguard.cfg
+++ b/LaunchServer/src/main/resources/ru/gravit/launchserver/defaults/proguard.cfg
@@ -19,9 +19,9 @@
 -keepattributes Signature
 -adaptresourcefilecontents META-INF/MANIFEST.MF
 
--keeppackagenames com.mojang.**,net.minecraftforge.fml.**,cpw.mods.fml.**,oshi.**,com.sun.jna.**,com.google.gson.**
+-keeppackagenames com.mojang.**,net.minecraftforge.fml.**,cpw.mods.fml.**,oshi.**,com.sun.jna.**,com.google.gson.**,org.slf4j.**
 
--keep class com.mojang.**,net.minecraftforge.fml.**,cpw.mods.fml.**,oshi.**,com.sun.jna.**,com.google.gson.**,org.slf4j.**,oshi.jna.**,com.sun.jna.** {
+-keep class com.mojang.**,net.minecraftforge.fml.**,cpw.mods.fml.**,oshi.**,com.sun.jna.**,com.google.gson.**,org.slf4j.** {
     *;
 }