FormScanner just doesn´t work

[Isaías Gouvêa Gonçalves]

I got some images to scan having a proper corner delimiter, and I set the form template as usual, but when I click "Read all images" or "Read one at time" nothing happens, nothing appears on screen. I don't know what I'm supposed to do

[John Polasek]

Speaking from experience, I have found that it the corner markers are too close to the edge of the sheet, any misalignment of the answer sheets in the scanner will make formscanner simply ignore the sheet.  It seems to work better if the markers are placed as close to the mark area as possible and to crop the file used to build the template to bring the corner markers as close as possible to the edge of the image.