Processor: Intel(R) Core(TM) i5-9400 CPU @ 2.90GHz
Memory: 8Gb
Disc Space. 197Gb free of 1Tb
Having said that, I've just tried editing another file and it works as normal. 😃
I'll try again with the former file and do a few experiments as per your directions.
Later......................
I did a few more exports successfully and updated to v7.53.
However it is still behaving badly. Crashed 4 times last night at the conclusion of a export, leaving me with a unplayable file.
It also seems to take an extraordinarily long time to complete this task. And a long time to load the source file.
I am presently exporting a 90min film in HD. Been going half-an-hour and it's only reached 20%.
All I am trying to do is trim a few bits - nothing fancy. 😕