Several recurring defects are configuration, not product. A child region larger than its parent image, often by a rounding error after a fixture move, needs a region inset by a few pixels on each side. Image rotation from the view menu, rather than from the acquisition cell, flips coordinate sense and makes correct math look wrong. A local file path in the header means the job is running from the laptop, not camera memory. Property-sheet edits sever cell links. Filter kernels must be odd, and a reversed min and max silently defeats the tool. Patterns fail on score, angle range, granularity that trained the background, or a timeout longer than the cycle. Edges fail on strength, polarity, and region direction: the search must cross the transition. Blobs fail on threshold, area limits, and boundary handling. Debounce and trigger source explain double fires. These checks are faster than a hardware project and should be exhausted before the job is declared incapable.
