Web Player SecurityManager Exception

Unity Engine
1

When I run my game in Unity Web Player, It doesn’t work (app freeze, screen is black).
But PC build work fine without any errors.
In log I have:

MethodAccessException: Attempt to access a private/protected method failed.
  at System.Security.SecurityManager.ThrowException (System.Exception ex) [0x00000] in <filename unknown>:0 
  at DataMgr.getDataResource (System.String filename) [0x00000] in <filename unknown>:0 
  at DataMgr.Init () [0x00000] in <filename unknown>:0 
  at main.Awake () [0x00000] in <filename unknown>:0 

(Filename:  Line: -1)

code of DataMgr.getDataResource() function

public static int getDataResource(string filename)
    {
        //open file
        FileInfo aFile = new FileInfo(filename);
        if (!aFile.Exists) 
        {
            Log.Error("Error: File " + filename + " not found."); 
            return -1; 
        }

        Log.Info("Read file: " + filename);
        StreamReader reader = new StreamReader(filename, Encoding.UTF8);
        int i = 0;
        while (reader.Peek() != -1)
        {
            string line = reader.ReadLine();      // Line = sr.ReadToEnd();
            if (i == 0) { i++; continue; }
            string[] words = line.Split(';');
            if (words.Length < 4) { Log.Error("Wrong file format"); break; }
            words[0] = words[0].Trim();
            words[1] = words[1].Trim();
            words[2] = words[2].Trim();
            words[3] = words[3].Trim();
            words[4] = words[4].Trim();
            Resource resource = new Resource();
            resource.image = "Textures/ico/res/" + words[0];
            resource.id = words[1];
            resource.name_im = words[2];
            resource.name_ro = words[3];
            resource.info = words[4];
            m_gameResources.Add(resource);
            Log.Info("Read res: " + resource.info);
            i++;
        }
        Log.Info("End read");

        return 0;
    }

What I am doing wrong?

2

AFAIK, you cannot use StreamReader to read a file off the user’s hard drive from the Web Player.

3

you can not read or access anything on the users system with a webplayer to be more precise.

You can only use the WWW class to load data and you can only load data from the web (so http:// or https://)