4 or 5 times since the release of the latest build I’ve had this error when launching the game:
When that happens, the Task Manager shows that “xxd-0.xem” (“XIGNCODE WatchDog K”) is already running. The fix is simply to kill that leftover process and re-launch the game, but you should not have to manually clean up after leaving the game. Note that in all instance where this occurred the game had exited “cleanly” on the previous run, no crash, freeze or error that could explain this leftover.