https://bugs.winehq.org/show_bug.cgi?id=45972
--- Comment #5 from Zebediah Figura z.figura12@gmail.com --- (In reply to Dmitry Timoshkov from comment #4)
(In reply to Zebediah Figura from comment #3)
Ugh, thanks. So this was essentially broken by 9d121203955da5c761cfb5c22b6428278e41f0c7.
Nope, I investigated this as well (sorry for not mentioning it), and I've tested that before this commit the installer didn't work either, but it failed a bit differently. So, it's not your fault this time :)
Well, that's odd, given Hans' fix; commit 9d1212039 changed the struct layout and I failed to account for that. It wouldn't have manifested until 85d1fb62b, but that was the underlying cause. Possibly the installer depended on 85d1fb62b as well.