in release mode CompilationClass.GetAssembliesFile method fetchs different set of files

Question

My windows app does run-time compilation of code written by user. In debug mode, CompilationClass instance fetch few files which is needed by app. But in release mode same class instance fetch files from different location and hence error occurs.

// just sample piece of code

    CompilationClass cc = new CompilationClass();
        List<string> TotalAssemblyFiles;

    public Form1()
    {
        TotalAssemblyFiles = cc.GetAssembliesFile();      // Error in this line      
        InitializeComponent();
    }

Not sure what to do.. and issue occurs only in release mode. I'm not even specifying any path still.

    // Code for GetAssembliesFiles method

 public List<string> GetAssembliesFile()
        {
            List<string> myAssemblies = new List<string>();

            if (!File.Exists(Environment.CurrentDirectory + "\\assemblies.sft"))
            {
               // do nothing
            }
            else
            {
                BinaryFormatter binary = new BinaryFormatter();
                Stream sreader = new FileStream(Environment.CurrentDirectory + "\\assemblies.sft", FileMode.Open);

                myAssemblies = (List<string>)binary.Deserialize(sreader); // Issue
                sreader.Close();
            }
            return refAssemblies;

        }

In debug mode, myAssemblies fetchs 221 files while in release mode it fetch 355 files