void SidebarSourceNotReachable(object sender, EventArgs e)
{
if (MessageBox.Show(null, "Sidebar could not be loaded from '" + sidebar.SidebarSourceLocation + "' due to connection problems. Retry?",
"Acrolinx", MessageBoxButtons.RetryCancel, MessageBoxIcon.Error) == DialogResult.Retry)
{
sidebar.Start();
}
}