I was using a .75 off any chungs product e mailed to me from the company.The cashier said "its a photocopy" I asked her if she was the photo copy expert.So she called the manager and he said it was too. I have used severla of these in the past with no problem.So I went to another store to use it and it was fine.I guess they are not the photo copy exprets at that store????? WTF.