> I am curious if you had performed an update install of Windows 10 and, if so, over what version of Windows? yes, update on Windows 7 Home, using the automatic update offer. All drivers updated, all Windows Updates installed. After Windows 10 Update PinDMD2 stopped working, as Windows overwrote the driver with something different. Reason was that the PinDMD2 drivers are not certified. Reinstalling PinDMD2 driver also failed (silently). Solution was to uninstall the driver, then ask Windows to show available (already on disk) drivers, select PinDMD2, confirm, reboot, working... Currently everything works fine, except the described behavior. Not a show blocker, normal cabinet usage works fine. Only after installing/modifying a table, I cannot directly play via PinballX again, need to restart first. Anyway, thanks for your time!