how do i fix this error message

[Alastrine]

Unknown Error: System.Drawing
at System.Drawing.Image.FromFile(String filename, Boolean useEmbeddedColorManagement)
at System.Drawing.Image.FromFile(String filename)
at WindowsApplication7.Form1.DoUpdates()
at WindowsApplication7.Form1.Timer3_Tick(Object sender, EventArgs e)
at System.Windows.Forms.Timer.OnTick(EventArgs e)
at System.Windows.Forms.Timer.Callback(IntPtr hWnd, Int32 msg, IntPtr idEvent, IntPtr dwTime)C:\Program Files\EQ2MAP Updater\stop_button.png

[Ruddles]

Make sure stop_button.png is in that folder, and they you can open it up in a paint program (or windows preview).