I don't have a solution but to better understand the situation:
are you actually using the v15 default.4dd system,
or simply placing a {name}.4dd adjacent to the compiled structure file?
http://doc.4d.com/4Dv15/4D/15/Default-data-file-in-merged-applications.300-2018649.en.html
did you code sign (and verify) your built application?
unlikely, but did you check if the read-only-allow property is passed on to
your built application?
(for example, by implementing OPEN SETTINGS WINDOW)
http://doc.4d.com/4Dv15/4D/15.4/DatabaseData-storage-page.300-3285380.en.html
least but not least, always good to include the build number of 4D and the OS.
> 2017/12/20 7:41、James Knight via 4D_Tech <[email protected]> のメール：
> It’s clearly permissions related - but how can I fix it?
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