I can’t very well guess the compressed size :)
It turns out this bug also happens if I convert to UDRO and UDCO.
I don’t want to ship a writable image, and not compressing it is an issue as we are downloading this client over bandwidth constrained networks.
I guess I’ll just have to wait for a fix.
Oddly, this used to work fine. Then at some point I got the “No welcome text in the installer” bug. My fix at the time was to add a trailing newline to the file, and the bug went away (I thought it was an installer bug). Now it is back, and the file content and name don’t seem to make any difference (really, why would they?).
Perhaps I’ll have to roll back my dev tools and OS version and see if I can get it to work on an older tools configuration. Which would mean building on one machine and packaging on another. How ugly is that…