I have just tried it on my Windows 10 Notebook and it ran perfectly.
So I guess there is sommat wrong with the Laptop ?
Not surprising really, it is ancient, about 10 years old, and has suffered many indignities, having been through the mill from Vista, Win 7, Win 8, Win 8.1, to Win 10.
It is an old Acer Aspire 5738, with a 32 bit X64 based processor, Intel core 2Duo CPU (T6400) @ 2.0Ghz, with 4Gb RAM (3Gb useable).
It seems to do most things well enough, albeit somewhat slowly; I would have thought that it could have handled the video in question, but, obviously not ?
Anyway, I will delete the data from one drive, later today, and would be grateful if you would make sure that your copy of the video is not available for public perusal.
Thanks for all your help on this issue, I am much enlightened on the capabilities of this programme, and will probably buy it, ….. eventually.