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Troubleshoot

  • Mischief
    is currently not plug-and-play. If a mouse is
    disconnected while Mischief .exe is running, that mouse will no longer
    have access, even if you plug it back in. You must restart the
    application to get access to that mouse again. Likewise, you cannot plug
    in mice after the application has started. They will not be recognized.
  • If
    you notice the cursors are moving slow:

    • Check your USB hubs for sufficient power (orange
      or red light means power is low)
    • Check system’s amount of video RAM (32 MB
      recommended)
    • Check to see if other processes are taking CPU
      time (e.g. iexplore.exe)
    • Kill tabtip.exe in task manager (if exists)
  • When
    you plug in many mice at the same time, wait for 30 seconds before
    starting Mischief.exe. Make sure Windows has time to detect the mice.
  • Don’t
    use PPT textboxes that automatically change text size based on the shape.
    Define your font size.
  • Mischief
    will always run in full-screen mode.
  • Projectors
    should not run for several hours in a row. You should turn it off, let it
    cool down after 1-2 hours, then start it again.
  • Connect
    each USB hub to external AC power. Don’t rely on power over USB 2.0.
  • MultiPointSDK.DLL
    may crash if you don’t have 2 mice attached! To be sure, attach 2 mice to
    the laptop or desktop MED is running on.
  • Wireless
    mice: the range may be very small on your mice. Long-range wireless mice
    (2.4 Ghz) cost about $75 each. If you have cheaper wireless mice, put the
    receivers in the middle of the classroom.
  • The
    power plug for the USB hubs may become loose – be careful they don’t come
    out during your class. Use tape!
  • power surge
    When the USB hubs don’t have enough power, this may happen. You want to
    avoid this because it can cause speed problems with the cursors.
  • 228%
    This looks like a problem but I haven’t encountered any problems other
    than a hot laptop surface. Basically your USB bus is overworked (228%).
  • max number of hubs reached - XP.JPG
    The solution is to reconfigure how the hubs are linked together. The best
    is to connect each hub to a single hub that is connected directly to the
    computer. So don’t daisy-chain more than 2 hubs together.