I need advice about a runtime failure in Video2x 4.8.1

[bluekitepete]

I'm new - so apologies if I'm posting this question in the wrong place or the wrong way. Please advise.
I have Win11 and I'm running video2x (as Administrator) to upscale some .mp4
I'm running the video2x_gui.exe using the SMRD NCNN Vulkan driver.
The app launches OK, creates the CACHE folder and the 2 required sub-folders.
It processes the source video and creates the .PNG files (one for each frame) in one of the sub-folders.
Then it bombs out with ERROR 4294967295
Then it deletes the CACHE folder(s) and everything in them.
Any suggestions?
I've installed Linux, Ubuntu, & Python, and I've changed my BIOS so that virtualisation can happen.
Obviously there's something else I need to do...
Many thanks in advance - I hope - Pete

[bluekitepete]

My feeling about this is - it's not finding some dependency it needs. Reviewing other similar discussion threads - is it possible that it's a PATH issue? I'm running the .exe from an external D:/ drive. Do I need to copy everything onto my C:/ drive? Are there absolute PATHs involved? If so - where is the correct place, and the correct name, to put it on the C:/ drive?
Or do you think I'm looking in the wrong direction?
Many thanks - Pete