My Unexpiring Mathcad 15 License Keeps Expiring The book that came with my original purchase of Mathcad 15 indicates "This is the full unexpiring version of Mathcad" (Ref. Brent Maxfield, P.E., Essential Mathcad For Engineering, Science, and Math, 2nd edition, Academic Press, 2009, Page 3). The quotation marks means it's verbatim from the book, by the way. Yet every year my license expires and I am forced to go through this exercise with PTC once again. Now the PTC website says my trial has expired, which is absolutely not true. Please provide me with yet another expiring license for my unexpiring version of Mathcad 15. This is for my home computer. I have a yearly subscription fee paid subscription for Mathcad 14 (JG140805EP0020-JTQB-VCY7) on my work computer that I cannot use at home except through a VPN connection. I need my unexpiring home edition for when I have to work at home. I would have used my home Mathcad account, but PTC has locked me out of that account. Why do you hate me?