> Don't worry guys; have worked out what's causing issues 1) & 2)...
> I was using "snap.7z" and "titles.7z"; if I do either of the following all is perfect
> a) Extract all files from the archives into the "Snap" and "Titles" directories.
> b) Rezip all files into archives "snap.zip" & "titles.zip".
yeah, if anybody is stupid enough to enable 'solid mode' compression with something like that you'll get the problem you describe, it's expected.
things like that should be used in an appropriate way, you can quite easily do .7z *without* having Solid compression enabled, which would be more appropriate for this use case, but people do seem to like to misuse the tools they have available to them. This is a shame because ultimately it ends up leading to somebody deciding to give people less choice so that they can't fuck things up, which then has a negative impact on the people who are using them in an appropriate way. (this is why software keeps getting dumbed down)