I really know the feeling…
try this…
artwork by the customer
pre-press of a 60cm x 40cm brochure, at some point you need to rotate it 90 (only change in the original) to fit 2 for paper sheet, film, plates, print 150.000 just to find that there was a lense that didn’t rotate … soo you need to repeat the all job.
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Now go and tell the boss.