OnCourse Software

Today, I was flying PMDG 777-300ER from EGLL to UUEE. During flight FSX went in to hang u pmode twice. PF3 created error log. First time i could resume flight with PF3 but second time it said that there are no enough hotkeys to continue this flight. This has happened for the first time. I am attaching error log.
Can you suggest any solutions?

Best wishes

There is no known workaround for recovering used hotkeys from a hanging connection to FSX/FSUIPC without restarting FSX.
You could kill PF3 to save a resume file, then save your flight in FSX, restart FSX, load the flight, pause, start PF3, resume.