Same again a few minutes ago. I changed LIBRARY_IS_AIR 0 to LIBRARY_IS_AIR 1. I called Poser 10, which refused to run. I looked in Poser.ini using Wordpad.The line now was LIBRARY_IS_AIR 0 again. Something automatic keeps changing it back. I have Windows 10 Home version 1511, OS Build 10586.36, x64 processor type, which came as a free upgrade offer from Microsoft. I had Windows 8.1 before. Control Panel/All Control Panel Items/Programs and Features says that my Adobe AIR was installed on 9 Jan 2016 and is version 20.0.0.233 .

My Settings page has a clickable to upgrade my Windows. Should I accept the offer?