i found it in another post: ( maybe it can solve your problem also)
"Problem solved…I have no idea what caused the issue…anyway the solution was to start Nuendo in Safe Mode and clear the program preferences… "
i found it in another post: ( maybe it can solve your problem also)
"Problem solved…I have no idea what caused the issue…anyway the solution was to start Nuendo in Safe Mode and clear the program preferences… "