Environment:
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macOS 15.3 (Darwin 25.3.0)
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M5 MacBook Pro (fresh migration from Intel)
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Photoshop 27.4.0
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UXP 9.2.0
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UXP Developer Tools (latest from Creative Cloud)
Symptoms:
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Plugin validates successfully every time
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Plugin load times out every time
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Bare minimum plugin (manifest + 2 lines of HTML, no JS) also times out
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Playground plugin loads fine from within PS
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Debug Script also fails
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Placing plugin in Developer folder + restart: plugin doesn’t appear
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Fresh reinstall of both PS and UDT didn’t help
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APP LOGS show no output from the plugin — code never executes
Manifest tested: v4 and v5, both fail identically
What works: Built-in Playground plugin loads and runs. PS itself is functional.