>It depends on what else is open at the time.

Come on, it doesn't depend on anything.
Moving from record 1234 to record 1235 is precisely the same, in my case, as moving from 1235 to 1236. All I do is move next, move previous, and if I do it quickly I get the error. It doesn’t matter the specific record, it may or may not happen on the same record, going up or going down…

dz