Yes. OMF (and AAF) is a wide and fast changing planet. I rarely found out why one export is working, the other not. But often there is workarounds. If you have any other Nuendo versions installed, try this. It can happen that an old Nuendo version will do what the newest one is not. If you can do an other export from this video system of yours, try. Or perhaps you have a ProTools System around (not that I would say that this is the better tool, but sometimes it did a job that Nuendo didn’t)…
Good luck
Oswald