Uwizard cannot extract files when given a network path

[OatmealDome]

Uwizard fails to extract files when given a network path (ex: \psf\Home\Documents\Uwizard). When using Parallels on OS X, the "Documents" and "Desktop" folders are remapped to paths like the one just mentioned. Because of that, I had to copy my files into a folder on C:\ to be able to extract them.

Exception log:

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************** Exception Text **************
System.ArgumentNullException: Value cannot be null.
Parameter name: path
   at System.IO.Directory.CreateDirectory(String path, DirectorySecurity directorySecurity)
   at System.IO.Directory.CreateDirectory(String path)
   at Uwizard.SARC.makedirexist(String dir)
   at Uwizard.SARC.extract(Byte[] infile, String outdir)
   at Uwizard.SARC.extract(String infile, String outdir)
   at Uwizard.Form1.arc_extractsarc_Click(Object sender, EventArgs e)
   at System.Windows.Forms.Control.OnClick(EventArgs e)
   at System.Windows.Forms.Button.OnClick(EventArgs e)
   at System.Windows.Forms.Button.OnMouseUp(MouseEventArgs mevent)
   at System.Windows.Forms.Control.WmMouseUp(Message& m, MouseButtons button, Int32 clicks)
   at System.Windows.Forms.Control.WndProc(Message& m)
   at System.Windows.Forms.ButtonBase.WndProc(Message& m)
   at System.Windows.Forms.Button.WndProc(Message& m)
   at System.Windows.Forms.Control.ControlNativeWindow.OnMessage(Message& m)
   at System.Windows.Forms.Control.ControlNativeWindow.WndProc(Message& m)
   at System.Windows.Forms.NativeWindow.Callback(IntPtr hWnd, Int32 msg, IntPtr wparam, IntPtr lparam)

[maki-chan]

Looks like a problem with the code in Uwizard/SARC.cs from line 58-71.

        private static void makedirexist(string dir) {
            string dpath = System.IO.Path.GetFullPath(dir);
            int numdirs = 0;
            for (int c = 0; c < dpath.Length; c++)
                if (dpath[c] == '\\') numdirs++;

            for (int c = numdirs; c >= 0; c--) {
                string tmp = dpath;
                for (int cc = 0; cc < c; cc++)
                    tmp = System.IO.Path.GetDirectoryName(tmp);
                if (!System.IO.Directory.Exists(tmp))
                    System.IO.Directory.CreateDirectory(tmp);
            }
        }

I don't know why this thing is written so complicated. It seems that it tries to recursively create new directories if needed. Though System.IO.Directory.CreateDirectory() already creates directories recursively according to the .NET documentation. It should be changed to

        private static void makedirexist(string dir) {
            string dpath = System.IO.Path.GetFullPath(dir);
            if (!System.IO.Directory.Exists(dpath))
                System.IO.Directory.CreateDirectory(dpath);
            }
        }

I hope I didn't miss anything, but that should still work, right?