Please add mistakes and solutions in short description:

Calibration finds to many points?

• Maybe your contrast is too low. Try to improve your brightness, contrast, gamma, exposure time, sensetivity in your camsettings till you get a clear black/white picture. Additional light helps.
• * If this fails: Use the Eraser

• Maybe the cam sees more than DAVID´s calibrationcorner. Move cam or zoom in.

Calibration finds less than 25 points?

• Maybe your picture is noisy and oversaturated? Reduce contrast

Calibrations does not find the 6 inner points?

Calibration reports success but the red crosses are spreaded totaly wrong?

• Did you change the coordinates in calibpoints.dat? If yes - Their values don´t fit to each other. Correct them.
• Do you use a windowsetup, minuscorner or negative Window? If yes - you have to change the calibpoints.dat file values.