Resolved Mono.exe can not be found in stand-alone.

Hello,
I am making a game in which a player can type his own script and play it runtime. It works perfectly fine in Unity Editor but when i try building the game and run the script i get an error which i can't solve. I hope you guys can help me.
My project is set:
Scripting Backend: Mono
Api: .NET 4.x

Code (CSharp):

1.  
2.  
3. public void PlayScript()
4.     {
5.         if (compilationWindow.activeSelf == true)
6.             return;
7.  
8.         StringBuilder source = new StringBuilder();
9.         source.Append("using UnityEngine;\nusing SplitAndMerge;\npublic class PlayersCode{\npublic static void Run(){\nSplitAndMerge.Program.MainUnity(new string []{\"\n");
10.  
11.         source.Append(scriptText.text.Replace("\u0022", "\u005c\u0022"));
12.         source.Append("\"});}}");
13.  
14.         var assembly = Kompiluj(source.ToString().Replace("\n", ""));
15.         var method = assembly.GetType("PlayersCode").GetMethod("Run");
16.         var del = (Action)Delegate.CreateDelegate(typeof(Action), method);
17.         del.Invoke();
18.         showCompilationError();
19.  
20.  
21.     }
22. ........
23.  private Assembly Kompiluj(string kod)
24.     {
25.         var provider = new CSharpCodeProvider();
26.         var param = new CompilerParameters()
27.         {
28.             GenerateExecutable = false,
29.             GenerateInMemory = true
30.         };
31.         //standardowe assembly z projektu itp
32.         foreach (var assembly in AppDomain.CurrentDomain.GetAssemblies())
33.         {
34.             param.ReferencedAssemblies.Add(assembly.Location);
35.         }
36.         //dodatkowe assembly
37.         param.ReferencedAssemblies.Add("System.dll");
38.         param.ReferencedAssemblies.Add("Assets/Resources/cscs.dll");
39.  
40.  
41.  
42.         var results = provider.CompileAssemblyFromSource(param, kod);
43.  
44.         Debug.Log(results.Errors.Count);
45.         if (results.Errors.Count > 0)
46.         {
47.             foreach (CompilerError CompErr in results.Errors)
48.             {
49.                 Debug.Log(
50.                      "Line number " + CompErr.Line +
51.                      ", Error Number: " + CompErr.ErrorNumber +
52.                      ", '" + CompErr.ErrorText + ";" +
53.                      Environment.NewLine + Environment.NewLine);
54.             }
55.         }
56.         return results.CompiledAssembly;
57.  
58.     }
59.    
60.  

I tried creating the folder there and i copy pasted files from unity, it "worked" but i still got another error :
Exception: Compiler failed to produce the assembly. Output: ''
at Microsoft.CSharp.CSharpCodeGenerator.FromFileBatch

 

Used roslyn instead and it works