How can I tell if I have the correct Real NZ NZCH installer?

[toprob]

A good question, glad you asked, Rob.

To speed up the rollout, I left the filename and version the same for all versions. Not ideal in hindsight, but quick!

The current and correct installer -- RealNZ_NZCHinstaller.zip -- if you put your cursor over it in your file manager, should show as 2.32GB. The actual file size is 2,439,704 KB.
If it is around 2.44GB, then it's the one with the flashing ground textures.
It it's smaller than 2.44, but not exactly the size shown in KB above, then it is the one with the add-on.xml file issue, and will only affect those with GSX installed really, but you can fix it yourself, I'll find the link to the details shortly.