Javascript error prevents app installation in High Sierra

Although it is described as supporting Os 10.9 and above, an installer from a previously reliable developer fails to install on my 2017 iMac/High Sierra with the Javascript error shown below which seems to bemoan the lack of a "suitable image". Any idea what it means or if there is anything I can do to circumvent it?


[Edited by Moderator]

Posted on Sep 1, 2025 1:06 AM

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Javascript error prevents app installation in High Sierra

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