I have an app with a small but devoted following. It has not been upgraded since 2022 and has been working very well. On iOS 26 it crashes almost at startup.
After hooking up to Xcode and running I get this message in the console:
objc[64686]: Class PSSegment is implemented in both /System/Library/PrivateFrameworks/PolarisGraph.framework/PolarisGraph (0x291ed9f78) and /private/var/containers/Bundle/Application/08486FCF-548A-467C-8BA3-D722734463FC/HikeTracker.app/HikeTracker.debug.dylib (0x101d309e8). This may cause spurious casting failures and mysterious crashes. One of the duplicates must be removed or renamed.
PSSegment is the name of an entity in my Core Data managed object model. If I refactor it to P_Segment the app starts.
PolarisGraph means nothing to me.
The "PS" stands for Persistent Store, but in this case it seems that PolarisGraph is PSing in my sandbox. How can this happen?
I'll attach the longer message that comes with the crash.
error messages.txt
Topic:
Community
SubTopic:
Apple Developers