private void mnuChallengeProperties_Click(object sender, EventArgs e)
        {
            Challenge            challenge = SelectedNode.Tag as Challenge;
            ChallengeDetailsForm form      = new ChallengeDetailsForm(mPack, challenge);

            if (form.ShowDialog() == DialogResult.OK)
            {
                //Challenge name may have changed
                SelectedNode.Text = challenge.Name;
            }
        }
		private void mnuChallengeProperties_Click(object sender, EventArgs e)
		{
			Challenge challenge = SelectedNode.Tag as Challenge;
			ChallengeDetailsForm form = new ChallengeDetailsForm(mPack, challenge);
			if (form.ShowDialog() == DialogResult.OK) {
				//Challenge name may have changed
				SelectedNode.Text = challenge.Name;
			}
		}