Have you filed an issue with the developer or otherwise contacted them?
These are all from @Daniel_KM I believe… it could just be a problem with the zipping process corrupting this file, which wouldn’t necessarily be apparent to a developer without user reports as they wouldn’t normally use the zipped version day-to-day.
An shot-in-the-dark example of the kind of thing that could cause this problem: the new version of Gulp will default to corrupting binary files unless you set a flag encoding: false that you didn’t have to before.