diff --git a/DTLib.csproj b/DTLib.csproj
index c699849..63e5db3 100644
--- a/DTLib.csproj
+++ b/DTLib.csproj
@@ -15,13 +15,14 @@
     <Deterministic>true</Deterministic>
   </PropertyGroup>
   <PropertyGroup Condition=" '$(Configuration)|$(Platform)' == 'Build|AnyCPU' ">
-    <DebugType>none</DebugType>
-    <Optimize>true</Optimize>
+    <DebugType>full</DebugType>
+    <Optimize>false</Optimize>
     <OutputPath>bin\</OutputPath>
     <DefineConstants>TRACE</DefineConstants>
     <ErrorReport>prompt</ErrorReport>
     <WarningLevel>4</WarningLevel>
     <AllowUnsafeBlocks>true</AllowUnsafeBlocks>
+    <DebugSymbols>true</DebugSymbols>
   </PropertyGroup>
   <ItemGroup>
     <Reference Include="System" />
@@ -35,7 +36,6 @@
     <Compile Include="CompressedArray.cs" />
     <Compile Include="Dtsod\DtsodV21.cs" />
     <Compile Include="Dtsod\DtsodV22.cs" />
-    <Compile Include="cs9somefix.cs" />
     <Compile Include="Dtsod\V30\DtsodSerializableAttribute.cs" />
     <Compile Include="Dtsod\V30\DtsodV30.cs" />
     <Compile Include="Dtsod\V30\DtsodVersion.cs" />
@@ -52,7 +52,7 @@
     <Compile Include="Hasher.cs" />
     <Compile Include="SafeMutex.cs" />
     <Compile Include="SecureRandom.cs" />
-    <Compile Include="SimpleConverter.cs" />
+    <Compile Include="FrameworkFix.cs" />
     <Compile Include="TImer.cs" />
     <Compile Include="XXHash.cs" />
   </ItemGroup>
diff --git a/Filesystem/File.cs b/Filesystem/File.cs
index 54ee230..702f1c4 100644
--- a/Filesystem/File.cs
+++ b/Filesystem/File.cs
@@ -42,7 +42,7 @@ namespace DTLib.Filesystem
             return output;
         }
 
-        public static string ReadAllText(string file) => SimpleConverter.ToString(ReadAllBytes(file));
+        public static string ReadAllText(string file) => FrameworkFix.ToString(ReadAllBytes(file));
 
         public static void WriteAllBytes(string file, byte[] content)
         {
diff --git a/SimpleConverter.cs b/FrameworkFix.cs
similarity index 85%
rename from SimpleConverter.cs
rename to FrameworkFix.cs
index 23d11fa..79caea5 100644
--- a/SimpleConverter.cs
+++ b/FrameworkFix.cs
@@ -1,13 +1,22 @@
 using System;
 using System.Collections.Generic;
+using System.ComponentModel;
+using System.Linq;
 using System.Text;
 
+// включает init и record из c# 9.0
+namespace System.Runtime.CompilerServices
+{
+    [EditorBrowsable(EditorBrowsableState.Never)]
+    public class IsExternalInit { }
+}
+
 namespace DTLib
 {
     //
     // содержит методы расширения для различных операций и преобразований
     //
-    public static class SimpleConverter
+    public static class FrameworkFix
     {
 
         // эти методы работают как надо, в отличии от стандартных, которые иногда дуркуют
@@ -152,5 +161,27 @@ namespace DTLib
             foreach(T elem in en)
                 act(elem);
         }
+
+        // делает что надо в отличии от String.Split(), который не убирает char c из начала
+        public static List<string> SplitToList(this string s, char c)
+        {
+            var ar = s.ToCharArray();
+            StringBuilder b = new();
+            List<string> o = new();
+            if(ar[0]!=c)
+                b.Append(ar[0]);
+            for(int i = 1; i<ar.Length; i++)
+                if(ar[i]==c)
+                {
+                    if(b.Length>0)
+                        o.Add(b.ToString());
+                    b.Clear();
+                }
+                else
+                    b.Append(ar[i]);
+            if(b.Length>0)
+                o.Add(b.ToString());
+            return o;
+        }
     }
 }
\ No newline at end of file
diff --git a/Network/FSP.cs b/Network/FSP.cs
index db7462d..276bd50 100644
--- a/Network/FSP.cs
+++ b/Network/FSP.cs
@@ -67,11 +67,11 @@ namespace DTLib.Network
             Mutex.Execute(() =>
             {
                 BytesDownloaded=0;
-                Filesize=SimpleConverter.ToString(MainSocket.GetPackage()).ToUInt();
+                Filesize=FrameworkFix.ToString(MainSocket.GetPackage()).ToUInt();
                 MainSocket.SendPackage("ready".ToBytes());
                 int packagesCount = 0;
                 byte[] buffer = new byte[5120];
-                int fullPackagesCount = SimpleConverter.Truncate(Filesize/buffer.Length);
+                int fullPackagesCount = FrameworkFix.Truncate(Filesize/buffer.Length);
                 // получение полных пакетов файла
                 for(byte n = 0; packagesCount<fullPackagesCount; packagesCount++)
                 {
@@ -115,7 +115,7 @@ namespace DTLib.Network
                 MainSocket.GetAnswer("ready");
                 byte[] buffer = new byte[5120];
                 int packagesCount = 0;
-                int fullPackagesCount = SimpleConverter.Truncate(Filesize/buffer.Length);
+                int fullPackagesCount = FrameworkFix.Truncate(Filesize/buffer.Length);
                 // отправка полных пакетов файла
                 for(; packagesCount<fullPackagesCount; packagesCount++)
                 {
@@ -144,7 +144,7 @@ namespace DTLib.Network
             if(!dirOnServer.EndsWith("\\"))
                 dirOnServer+="\\";
             Debug("b", "downloading manifest <", "c", dirOnServer+"manifest.dtsod", "b", ">\n");
-            var manifest = new Dtsod.DtsodV22(SimpleConverter.ToString(DownloadFileToMemory(dirOnServer+"manifest.dtsod")));
+            var manifest = new Dtsod.DtsodV22(FrameworkFix.ToString(DownloadFileToMemory(dirOnServer+"manifest.dtsod")));
             Debug("g", $"found {manifest.Values.Count} files in manifest\n");
             var hasher = new Hasher();
             foreach(string fileOnServer in manifest.Keys)
diff --git a/Network/Package.cs b/Network/Package.cs
index ee1c234..756223b 100644
--- a/Network/Package.cs
+++ b/Network/Package.cs
@@ -55,7 +55,7 @@ namespace DTLib.Network
         // получает пакет и выбрасывает исключение, если пакет не соответствует образцу
         public static void GetAnswer(this Socket socket, string answer)
         {
-            string rec = SimpleConverter.ToString(socket.GetPackage());
+            string rec = FrameworkFix.ToString(socket.GetPackage());
             if(rec!=answer)
                 throw new Exception($"GetAnswer() error: invalid answer: <{rec}>");
         }
diff --git a/cs9somefix.cs b/cs9somefix.cs
deleted file mode 100644
index b5c71f9..0000000
--- a/cs9somefix.cs
+++ /dev/null
@@ -1,8 +0,0 @@
-// включает init и record из c# 9.0
-using System.ComponentModel;
-
-namespace System.Runtime.CompilerServices
-{
-    [EditorBrowsable(EditorBrowsableState.Never)]
-    public class IsExternalInit { }
-}