Also, a followup question. WidgetKit's documentation states there's a limit of 40-75 refreshes per day. (https://developer.apple.com/documentation/widgetkit/keeping-a-widget-up-to-date says "typically includes from 40 to 70", https://developer.apple.com/documentation/widgetkit/converting-a-clockkit-app says "up to 75 updates per day") My app needs to change its Complication display every 5 minutes (288 different entries over a day) but all updates are entirely predictable, and the same timeline repeats every day. I remember ClockKit allowing something along the lines of 100 individual timeline entries, so refreshing every 4-6 hours was enough to keep things fresh even if a refresh was skipped. It's all text, low impact, no network access, so battery impact is hopefully minimal. So... is the stated limit of "refreshes" a limit to the number of individual updates (meaning I can't use Widgets at all), or timeline changes (they should work)?

Replying to my own thread for anyone else in the same boat. A Watch complication’s access to app settings was deprecated in watchOS 6 and is now unreliable. (I had missed this.)

The Fly app has already done this, so yes, it's possible. https://apps.apple.com/us/app/fly-explore-the-earth/id6501962358 Developer-led discussion here: https://www.reddit.com/r/VisionPro/comments/1eb6zih/fly_google_earth_vr_on_vision_pro_out_today/

Thanks very much for trying it out — I've just tried again and it's still failing for me. I've given a unique name and added icons but I'm getting the same error. I am able to archive another app I've been working on, so it's specific to this project. I get the error when choosing Product > Archive. Running the app works fine, installing to the Vision Pro works fine. I've attached a snap from the failed build log.

Thanks so much for tracking that down. I've been able to Archive my project after rearranging the files in the same way. However, I can't distribute the app, because "The archive contains nothing that can be signed." Something's clearly a bit funky here, but the app works just fine on-device.

Great! Glad I could help and that we found a resolution. Xcode has many buttons and switches, and it's sometimes hard to find the right ones to mess with. Thanks again! Also, if you (or anyone reading this) have an Apple Vision Pro and you're interested in stereography, here's a TestFlight link to the app that triggered this error: https://testflight.apple.com/join/2eMft2G1