diff --git a/.idea/workspace.xml b/.idea/workspace.xml
index b0fe59dc..f2d38427 100644
--- a/.idea/workspace.xml
+++ b/.idea/workspace.xml
@@ -8,12 +8,16 @@
   <component name="ChangeListManager">
     <list default="true" id="e42177c3-2328-4b27-8a01-35779b2beb99" name="Default Changelist" comment="">
       <change beforePath="$PROJECT_DIR$/.idea/workspace.xml" beforeDir="false" afterPath="$PROJECT_DIR$/.idea/workspace.xml" afterDir="false" />
-      <change beforePath="$PROJECT_DIR$/src/_VisualDVM/Constants.java" beforeDir="false" afterPath="$PROJECT_DIR$/src/_VisualDVM/Constants.java" afterDir="false" />
+      <change beforePath="$PROJECT_DIR$/src/_VisualDVM/Passes/Server/ClientPass.java" beforeDir="false" afterPath="$PROJECT_DIR$/src/_VisualDVM/Passes/Server/ClientPass.java" afterDir="false" />
+      <change beforePath="$PROJECT_DIR$/src/_VisualDVM/Passes/Server/CloneServerObject.java" beforeDir="false" afterPath="$PROJECT_DIR$/src/_VisualDVM/Passes/Server/CloneServerObject.java" afterDir="false" />
+      <change beforePath="$PROJECT_DIR$/src/_VisualDVM/Passes/Server/DeleteServerObject.java" beforeDir="false" afterPath="$PROJECT_DIR$/src/_VisualDVM/Passes/Server/DeleteServerObject.java" afterDir="false" />
+      <change beforePath="$PROJECT_DIR$/src/_VisualDVM/Passes/Server/DeleteServerObjects.java" beforeDir="false" afterPath="$PROJECT_DIR$/src/_VisualDVM/Passes/Server/DeleteServerObjects.java" afterDir="false" />
+      <change beforePath="$PROJECT_DIR$/src/_VisualDVM/Passes/Server/EditServerObject.java" beforeDir="false" afterPath="$PROJECT_DIR$/src/_VisualDVM/Passes/Server/EditServerObject.java" afterDir="false" />
+      <change beforePath="$PROJECT_DIR$/src/_VisualDVM/Passes/Server/PublishServerObject.java" beforeDir="false" afterPath="$PROJECT_DIR$/src/_VisualDVM/Passes/Server/PublishServerObject.java" afterDir="false" />
+      <change beforePath="$PROJECT_DIR$/src/_VisualDVM/Passes/Server/RepositoryPass.java" beforeDir="false" afterPath="$PROJECT_DIR$/src/_VisualDVM/Passes/Server/RepositoryPass.java" afterDir="false" />
       <change beforePath="$PROJECT_DIR$/src/_VisualDVM/Repository/Component/Visualiser.java" beforeDir="false" afterPath="$PROJECT_DIR$/src/_VisualDVM/Repository/Component/Visualiser.java" afterDir="false" />
       <change beforePath="$PROJECT_DIR$/src/_VisualDVM/Repository/RepositoryServer.java" beforeDir="false" afterPath="$PROJECT_DIR$/src/_VisualDVM/Repository/RepositoryServer.java" afterDir="false" />
-      <change beforePath="$PROJECT_DIR$/src/_VisualDVM/Repository/Server/ComponentsServer.java" beforeDir="false" afterPath="$PROJECT_DIR$/src/_VisualDVM/Repository/Server/ComponentsServer.java" afterDir="false" />
-      <change beforePath="$PROJECT_DIR$/src/_VisualDVM/Repository/Server/ServerRequestUnit.java" beforeDir="false" afterPath="$PROJECT_DIR$/src/_VisualDVM/Repository/Server/SafeServerExchangeUnit.java" afterDir="false" />
-      <change beforePath="$PROJECT_DIR$/src/_VisualDVM/TestingSystem/Common/TestingServer.java" beforeDir="false" afterPath="$PROJECT_DIR$/src/_VisualDVM/TestingSystem/Common/TestingServer.java" afterDir="false" />
+      <change beforePath="$PROJECT_DIR$/src/_VisualDVM/Repository/TestingClient.java" beforeDir="false" afterPath="$PROJECT_DIR$/src/_VisualDVM/Repository/TestingClient.java" afterDir="false" />
     </list>
     <option name="SHOW_DIALOG" value="false" />
     <option name="HIGHLIGHT_CONFLICTS" value="true" />
diff --git a/src/_VisualDVM/Passes/Server/ClientPass.java b/src/_VisualDVM/Passes/Server/ClientPass.java
index 3d754398..58ef0c00 100644
--- a/src/_VisualDVM/Passes/Server/ClientPass.java
+++ b/src/_VisualDVM/Passes/Server/ClientPass.java
@@ -3,6 +3,7 @@ import Common.Passes.Pass;
 import _VisualDVM.Constants;
 import _VisualDVM.Global;
 import _VisualDVM.Repository.RepositoryServer;
+import _VisualDVM.Repository.Server.SafeServerExchangeUnit;
 import _VisualDVM.Repository.Server.ServerCode;
 import _VisualDVM.Repository.Server.ServerExchangeUnit_2021;
 
@@ -38,7 +39,7 @@ public abstract class ClientPass <S extends RepositoryServer,T> extends Pass<T>
             }
             @Override
             protected void ServerAction() throws Exception {
-                Command(new ServerExchangeUnit_2021(code_in, arg_in,object_in));
+                Command(new SafeServerExchangeUnit(code_in, arg_in,object_in));
                 target = server_response.object;
             }
             @Override
diff --git a/src/_VisualDVM/Passes/Server/CloneServerObject.java b/src/_VisualDVM/Passes/Server/CloneServerObject.java
index 5f8d9651..cdcc24d3 100644
--- a/src/_VisualDVM/Passes/Server/CloneServerObject.java
+++ b/src/_VisualDVM/Passes/Server/CloneServerObject.java
@@ -2,6 +2,7 @@ package _VisualDVM.Passes.Server;
 import Common.Database.Objects.riDBObject;
 import _VisualDVM.Global;
 import _VisualDVM.Repository.RepositoryServer;
+import _VisualDVM.Repository.Server.SafeServerExchangeUnit;
 import _VisualDVM.Repository.Server.ServerCode;
 import _VisualDVM.Repository.Server.ServerExchangeUnit_2021;
 import javafx.util.Pair;
@@ -31,7 +32,7 @@ public abstract class CloneServerObject<S extends RepositoryServer, D extends ri
     }
     @Override
     protected void ServerAction() throws Exception {
-        Command(new ServerExchangeUnit_2021(ServerCode.CloneObjectByPK,
+        Command(new SafeServerExchangeUnit(ServerCode.CloneObjectByPK,
                 Global.mainModule.getAccount().name+"\n"+Global.mainModule.getAccount().email,
                 new Pair<>(src.getClass(), src.getPK())));
         pk = server_response.object;
diff --git a/src/_VisualDVM/Passes/Server/DeleteServerObject.java b/src/_VisualDVM/Passes/Server/DeleteServerObject.java
index 015ffe3f..8232ce89 100644
--- a/src/_VisualDVM/Passes/Server/DeleteServerObject.java
+++ b/src/_VisualDVM/Passes/Server/DeleteServerObject.java
@@ -1,6 +1,7 @@
 package _VisualDVM.Passes.Server;
 import Common.Database.Objects.DBObject;
 import _VisualDVM.Repository.RepositoryServer;
+import _VisualDVM.Repository.Server.SafeServerExchangeUnit;
 import _VisualDVM.Repository.Server.ServerCode;
 import _VisualDVM.Repository.Server.ServerExchangeUnit_2021;
 import _VisualDVM.ServerObjectsCache.VisualCaches;
@@ -38,7 +39,7 @@ public class DeleteServerObject<S extends RepositoryServer, D extends DBObject>
     }
     @Override
     protected void ServerAction() throws Exception {
-        Command(new ServerExchangeUnit_2021(ServerCode.DeleteObjectByPK, "",
+        Command(new SafeServerExchangeUnit(ServerCode.DeleteObjectByPK, "",
                 new Pair<>(target.getClass(), target.getPK())));
         VisualCaches.DeleteCache(target);
     }
diff --git a/src/_VisualDVM/Passes/Server/DeleteServerObjects.java b/src/_VisualDVM/Passes/Server/DeleteServerObjects.java
index 15b36c83..f61a2ab2 100644
--- a/src/_VisualDVM/Passes/Server/DeleteServerObjects.java
+++ b/src/_VisualDVM/Passes/Server/DeleteServerObjects.java
@@ -5,6 +5,7 @@ import Common.Database.Objects.riDBObject;
 import Common.Database.Tables.DBTable;
 import _VisualDVM.Global;
 import _VisualDVM.Repository.RepositoryServer;
+import _VisualDVM.Repository.Server.SafeServerExchangeUnit;
 import _VisualDVM.Repository.Server.ServerCode;
 import _VisualDVM.Repository.Server.ServerExchangeUnit_2021;
 import _VisualDVM.ServerObjectsCache.VisualCaches;
@@ -79,7 +80,7 @@ public class DeleteServerObjects<S extends RepositoryServer, D extends DBObject>
     }
     @Override
     protected void ServerAction() throws Exception {
-        Command(new ServerExchangeUnit_2021(ServerCode.DeleteObjectsByPK, getEmail(), new Pair<>(d, target)));
+        Command(new SafeServerExchangeUnit(ServerCode.DeleteObjectsByPK, getEmail(), new Pair<>(d, target)));
     }
     @Override
     protected void performFinish() throws Exception {
diff --git a/src/_VisualDVM/Passes/Server/EditServerObject.java b/src/_VisualDVM/Passes/Server/EditServerObject.java
index 25b59517..573a4632 100644
--- a/src/_VisualDVM/Passes/Server/EditServerObject.java
+++ b/src/_VisualDVM/Passes/Server/EditServerObject.java
@@ -1,6 +1,7 @@
 package _VisualDVM.Passes.Server;
 import Common.Database.Objects.DBObject;
 import _VisualDVM.Repository.RepositoryServer;
+import _VisualDVM.Repository.Server.SafeServerExchangeUnit;
 import _VisualDVM.Repository.Server.ServerCode;
 import _VisualDVM.Repository.Server.ServerExchangeUnit_2021;
 import _VisualDVM.ServerObjectsCache.VisualCaches;
@@ -30,7 +31,7 @@ public class EditServerObject<S extends RepositoryServer, D extends DBObject> ex
     //--
     @Override
     protected void ServerAction() throws Exception {
-        Command(new ServerExchangeUnit_2021(ServerCode.EditObject, "", target));
+        Command(new SafeServerExchangeUnit(ServerCode.EditObject, "", target));
     }
     @Override
     protected void showDone() throws Exception {
diff --git a/src/_VisualDVM/Passes/Server/PublishServerObject.java b/src/_VisualDVM/Passes/Server/PublishServerObject.java
index d8ec857a..525986d1 100644
--- a/src/_VisualDVM/Passes/Server/PublishServerObject.java
+++ b/src/_VisualDVM/Passes/Server/PublishServerObject.java
@@ -3,6 +3,7 @@ import Common.Database.Objects.DBObject;
 import Common.Database.Objects.riDBObject;
 import _VisualDVM.Global;
 import _VisualDVM.Repository.RepositoryServer;
+import _VisualDVM.Repository.Server.SafeServerExchangeUnit;
 import _VisualDVM.Repository.Server.ServerCode;
 import _VisualDVM.Repository.Server.ServerExchangeUnit_2021;
 public class PublishServerObject<S extends RepositoryServer, D extends DBObject> extends ServerObjectPass<S, D> {
@@ -38,7 +39,7 @@ public class PublishServerObject<S extends RepositoryServer, D extends DBObject>
     //--
     @Override
     protected void ServerAction() throws Exception {
-        Command(new ServerExchangeUnit_2021(ServerCode.PublishObject, getEmail(), target));
+        Command(new SafeServerExchangeUnit(ServerCode.PublishObject, getEmail(), target));
         pk = server_response.object;
     }
     @Override
diff --git a/src/_VisualDVM/Passes/Server/RepositoryPass.java b/src/_VisualDVM/Passes/Server/RepositoryPass.java
index 0924a688..a6a4cac3 100644
--- a/src/_VisualDVM/Passes/Server/RepositoryPass.java
+++ b/src/_VisualDVM/Passes/Server/RepositoryPass.java
@@ -1,10 +1,9 @@
 package _VisualDVM.Passes.Server;
 import Common.Database.RepositoryRefuseException;
 import Common.Passes.Pass;
-import Common.Passes.PassException;
 import _VisualDVM.Constants;
-import _VisualDVM.Global;
 import _VisualDVM.Repository.RepositoryServer;
+import _VisualDVM.Repository.Server.SafeServerExchangeUnit;
 import _VisualDVM.Repository.Server.ServerCode;
 import _VisualDVM.Repository.Server.ServerExchangeUnit_2021;
 import _VisualDVM.Utils;
@@ -54,7 +53,7 @@ public abstract class RepositoryPass<S extends RepositoryServer, T> extends Pass
         out = null;
     }
     protected abstract void ServerAction() throws Exception;
-    protected void Command(ServerExchangeUnit_2021 request_in) throws Exception {
+    protected void unsafe_command(ServerExchangeUnit_2021 request_in) throws Exception {
         ExitCode = ServerCode.Undefined;
         client_request = request_in;
         out.writeObject(client_request);
@@ -66,6 +65,9 @@ public abstract class RepositoryPass<S extends RepositoryServer, T> extends Pass
                 break;
         }
     }
+    protected void Command(SafeServerExchangeUnit request_in) throws Exception {
+        unsafe_command(request_in);
+    }
     @Override
     protected void body() throws Exception {
         connect();
diff --git a/src/_VisualDVM/Repository/Component/Visualiser.java b/src/_VisualDVM/Repository/Component/Visualiser.java
index c1aa7cb2..029b4b52 100644
--- a/src/_VisualDVM/Repository/Component/Visualiser.java
+++ b/src/_VisualDVM/Repository/Component/Visualiser.java
@@ -3,8 +3,6 @@ import Common.Utils.Utils_;
 import _VisualDVM.Constants;
 import _VisualDVM.Global;
 import _VisualDVM.Passes.PassCode;
-import _VisualDVM.Repository.Server.SaveServerExchangeUnit;
-
 import java.io.File;
 import java.io.IOException;
 import java.net.URISyntaxException;
@@ -63,7 +61,7 @@ public class Visualiser extends Component {
     //http://www.seostella.com/ru/article/2012/02/05/formatirovanie-daty-v-java.html
     @Override
     public void GetVersionInfo() {
-        version = SaveServerExchangeUnit.version;
+        version = Constants.version;
         String pattern = "MMM dd yyyy HH:mm:ss";
         DateFormat df = new SimpleDateFormat(pattern, Locale.ENGLISH);
         date_text = df.format(getClassBuildTime());
diff --git a/src/_VisualDVM/Repository/RepositoryServer.java b/src/_VisualDVM/Repository/RepositoryServer.java
index 6454457f..b9c9a9f6 100644
--- a/src/_VisualDVM/Repository/RepositoryServer.java
+++ b/src/_VisualDVM/Repository/RepositoryServer.java
@@ -316,7 +316,7 @@ public abstract class RepositoryServer<D extends Database> {
             }
             @Override
             protected void ServerAction() throws Exception {
-                Command(new ServerExchangeUnit_2021(ServerCode.Ping));
+                unsafe_command(new ServerExchangeUnit_2021(ServerCode.Ping));
             }
             @Override
             protected boolean validate() {
diff --git a/src/_VisualDVM/Repository/TestingClient.java b/src/_VisualDVM/Repository/TestingClient.java
index 27c15916..dae533fb 100644
--- a/src/_VisualDVM/Repository/TestingClient.java
+++ b/src/_VisualDVM/Repository/TestingClient.java
@@ -3,6 +3,7 @@ import Common.Passes.PassException;
 import Common.Utils.Utils_;
 import _VisualDVM.Global;
 import _VisualDVM.Passes.Server.RepositoryPass;
+import _VisualDVM.Repository.Server.SafeServerExchangeUnit;
 import _VisualDVM.Repository.Server.ServerCode;
 import _VisualDVM.Repository.Server.ServerExchangeUnit_2021;
 import _VisualDVM.TestingSystem.Common.TestingServer;
@@ -40,7 +41,7 @@ public abstract class TestingClient {
             }
             @Override
             protected void ServerAction() throws Exception {
-                Command(new ServerExchangeUnit_2021(code_in, arg, object_in));
+                Command(new SafeServerExchangeUnit(code_in, arg, object_in));
                 target = server_response.object;
             }
             @Override