https://bugs.winehq.org/show_bug.cgi?id=40945
--- Comment #5 from Gijs Vermeulen gijsvrm@gmail.com --- (In reply to Zebediah Figura from comment #4)
(In reply to Gijs Vermeulen from comment #3)
Oh hey, I may have just fixed that:
https://source.winehq.org/git/wine.git/commitdiff/ a0c9aab5deffcdf30826574ba331ea8f18616ce3
This certainly did help. I did see this patch beforehand, but of course I didn't put two and two together...
Unfortunately, this commit does not fix all the crash but evolves 2) into a crash in Put(), for which I've just sent patches.
The installer now ends with an error message, but doesn't crash anymore. I suspect it will need fixes for 1) and related issues for it to work fully.