private void buttonAddCharacter_Click(object sender, EventArgs e)
        {
            var ofd = new OpenFileDialog();

            if (ofd.ShowDialog() == DialogResult.OK)
            {
                try
                {
                    var character = _iatAsset.AddCharacter(ofd.FileName);
                    if (character.ErrorOnLoad != null)
                    {
                        MessageBox.Show("Error when loading character '" + character.CharacterName + "': " + character.ErrorOnLoad, Resources.ErrorDialogTitle, MessageBoxButtons.OK, MessageBoxIcon.Error);
                    }
                    _characterSources.DataSource = _iatAsset.GetAllCharacterSources().ToList();
                    _characterSources.Refresh();
                }
                catch (Exception ex)
                {
                    MessageBox.Show(ex.Message + "-" + ex.StackTrace, Resources.ErrorDialogTitle, MessageBoxButtons.OK,
                                    MessageBoxIcon.Error);
                }
            }
        }