Adding Images larger than 640px to an AR Ressources Group crashes XCode 26.5

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Created 18h

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As soon as I add an image with more than 640px (longest side) to an AR Resource Group as an AR Reference Image, Xcode crashes immediately.

I narrowed it down to that value. It does not seem to matter whether jpeg or png and the file size seems to be irrelevant, too.

The problem came to my attention when I tried to run a new Unity build of an AR App I created a year ago (for testing) in Xcode. This used to work flawlessly. Now It doesn’t; the build produces an error „Command CompileAssetCatalog failed with a nonzero exit code“ … and when I try to click on the Asset Catalogue inside of Xcode, Xcode crashes also immediately.

Answer 1

Mr_Qube OP

18h

It happens during the AR Resource Group validation.

Here is the error report (excerpt):

Translated Report (Full Report Below)

Process: Xcode [82031] Path: /Applications/Xcode 26.app/Contents/MacOS/Xcode Identifier: com.apple.dt.Xcode Version: 26.5 (24943) Build Info: IDEApplication-24943000000000000~2 (17F42) Code Type: X86-64 (Native) Role: Foreground Parent Process: launchd [1] Coalition: com.apple.dt.Xcode [5336]

Date/Time: 2026-06-09 10:15:57.7320 +0200 Launch Time: 2026-06-09 10:15:35.7248 +0200 Hardware Model: iMac20,1 OS Version: macOS 26.5.1 (25F80) Release Type: User Bridge OS Version: 10.5 (23P5067)

Crash Reporter Key: D4DE7743-5F95-C03C-002F-E333D57A450C Incident Identifier: AA0D1ED3-9FE8-482D-B38C-7F28875D19D6

Time Awake Since Boot: 550000 seconds

System Integrity Protection: enabled

Triggered by Thread: 13, Dispatch Queue: AR Resource Group Validation Queue

Exception Type: EXC_CRASH (SIGABRT) Exception Codes: 0x0000000000000000, 0x0000000000000000

Termination Reason: Namespace SIGNAL, Code 6, Abort trap: 6 Terminating Process: Xcode [82031]