Color patch recognition bug and advice

Color patches are wrong/not recognized for several targets, e.g. Sprydercheckr. RP looks for four columns in six rows instead of six columns in four rows. BUT if you flip your picture of the checker-card upright, everything works. You only have to blandly ignore the message that an upright picture "will not work". It does. 
Very good & useful program, by the way. Thanks, Robert