Hi, I'm getting the same issue: dyld[927]: Symbol not found: _$sSo24OS_dispatch_queue_serialC8DispatchE5label3qos10attributes20autoreleaseFrequency6targetABSS_AC0E3QoSVAbCE10AttributesVSo0a1_b1_C0CACE011AutoreleaseJ0OANSgtcfC Referenced from: <D5B497B4-6F51-387D-827C-85E82B1A6C68> /private/var/containers/Bundle/Application/56AAEC63-6AD9-4812-ABAB-CF945F502593/PanzerPower.app/PanzerPower Expected in: <5D28AD50-9087-35F4-B443-436779FBCC38> /usr/lib/swift/libswiftDispatch.dylib I'm running Sonoma 14.0 Beta (23A5312d), and Xcode 15.0 beta 8. I wondered if this is because of some of my libraries I'm using, but I've re-added all my deps using spm again, and still experiencing this. This is my bt dump: * thread #1, stop reason = signal SIGABRT * frame #0: 0x00000001cfcecee4 dyld`__abort_with_payload + 8 frame #1: 0x00000001cfcf6bcc dyld`abort_with_payload_wrapper_internal + 100 frame #2: 0x00000001cfcf6bfc dyld`abort_with_payload + 12 frame #3: 0x00000001cfc9ff1c dyld`dyld4::halt(char const*) + 324 frame #4: 0x00000001cfc9e468 dyld`dyld4::prepare(dyld4::APIs&, dyld3::MachOAnalyzer const*) + 3540 frame #5: 0x00000001cfc9c2e0 dyld`start + 1760 Thought to provide it here just in case it's of any help to someone.