Thanks structure, just to recap the problem. I am running OSX mojave, I have Poser 10 (physical copy), which is still working, I upgraded it to poser 11 (digital upgrade) and a few days ago upgraded that to poser pro11.1 (via SM download manager), which worked fine. I then updated to 11.2 (via the posersoftware downloader), and on trying to run it I get a message box saying "the grace period for activating has expired" with a prompt to a second message box saying "maximum number of activations for this license has been exceeded, and a prompt to insert serial number or "buy now". The next message box appears to be a Smith Micro one: entering the serial numbers (poser 11 and poser pro 11.1) takes me back to "The grace period for activation has expired"