There seem to be very few reports of this problem. But I'm seeing it today on my Mac Studio M4 Max running Sequoia 15.6 and the latest build of Transporter v1.3.4 (13410). "Can't authorize your user at this time." "Unable to process authenticateWithProvider request at this time due to a general error (1020)" ALSO seeing "The server returned an invalid response. This may indicate that a network proxy is interfering with communication, or that Apple servers are having issues. Please try your request again later. Status Code: 502 (bad gateway)" This has got to be something broken on Apple's end. Does anyone happen to know a work around? BTW I've used Transporter for years. Last time I used it was June 3rd of this year.

Does anyone have an update about this for Xcode 26.3/26.4? I'm finally getting around to updating my app's icon with Icon Composer and Liquid Glass for Tahoe. But now my app looks very out of place in Sequoia and earlier. I figured it'd be easy to just keep my old icon along side my new Tahoe icon so my app looks "correct" under both new and Legacy OS's. But I cannot for the life of me get this to work, and it's maddening. I've wasted well over half a day on this problem. Is there a known solution? Surely there must be a way, as the very latest builds of both Safari and Chrome have different icons in Sequoia and Tahoe.

Thanks @Steve4442. I figured you'd be the one to respond:) Ok, so dumb follow-up question: If I ditch Asset Catalog and use Icon Composer exclusively, is there a way to generate an icon such that the Liquid Glass effect is On for Tahoe, but Off for Sequoia and earlier? In other words, have an Icon Composer Layered icon which automatically renders "flat" in Sequoia, but "glassy" in Tahoe? I'm about 98% sure I can't, but I figured I'd ask in case I missed something really obvious.

@Steve4442 Quick FYI: I actually have the 2 different icons working now (Liquid Glass Icon Composer .icon appears in Tahoe, and my current Legacy .icns appears in Sequoia). It's a huge mess to do, but it is possible. In my case I had to: Generate a Legacy .icns via Terminal (instead of using an Asset Catalog in Xcode) Install Xcode 26.0.1 Create a simple test app with a Shell Script that runs actool to build the Asset.car file. Build my test app with Xcode 26.0.1 Copy the resulting Assets.car and the Terminal-built .icns, into my Xcode 24.3 production project. Tweak my Xcode 24.3 production project's Info.plist and build. Final app displays two different icons: LG in Tahoe, Legacy in Sequoia. To give you an idea of how messy this is, I had to follow much of John Siracusa's advice from here: https://mjtsai.com/blog/2025/08/08/separate-icons-for-macos-tahoe-vs-earlier/ If anyone really wants to go through this major hassle, I can try to write up instructions here. But it'll take me a while to write up the process and I'm not sure when I'll have the time to do that.

My test projects for anyone who wants to try this madness. Requires installing Xcode 26.0.1. Follow the 2 Read Me files included. At some point I may clean this up and post it on Github. But Dropbox will have to do in a pinch: https://www.dropbox.com/scl/fo/pyqw2s06pzc4gacdrysmf/AHp6Bqy7dzfGZz34jOoG6F0?rlkey=cziky74r2hwxfo9m4gpd6fpif&st=8z7au8wn&dl=0 If someone comes up with a cleaner way to do this, please share with the whole class:)

Ignore my Dropbox post. I set something up in Github instead. I hope this helps someone:) https://github.com/psulak/Tahoe-Sequoia-Hybrid-Icon