I am an (extremely. I might add) happy user of Korg Legacy. But some time ago something strange started to happen.
I am using the 64-bit version of KLC on Windows 7 64-bit with Ableton Live 9 64-bit, all original software. Since some weeks I have had to re-issue license for each of KLC 6 plugs each time I rebooted the machine. I noticed that after some time because I used to hibernate the workstation instead of turning it off

One thing that kinda happened at the same time this started to happen, was the Windows 10 upgrade offer. I haven't upgraded yet, the icon is still hanging in the tray, and probably the 3GB of upgrade packs have already downloaded, but they are not installed yet. Could that be recognized as 'environment change' by KLC??
Any help/hints would be really appreciated.