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Hi, I am running Xcode Beta Version 15.0 beta 3 (15A5195k) With my test Apps I am now getting the error Failed to Build the Scheme when trying to use the Canvas. The Apps all compile and run both in the Simulator and on an external device such as my iPhone, Error details below.. Any ideas would be helpful. Thanks.. Craig. == DATE: Friday, 7 July 2023 at 9:13:45 pm Australian Eastern Standard Time 2023-07-07T11:13:45Z == PREVIEW UPDATE ERROR: SchemeBuildError: Failed to build the scheme ”Ham Net” linker command failed with exit code 1 (use -v to see invocation) Link Ham Net (arm64): ld: Undefined symbols: unsafeMutableAddressor of self #1 : Ham_Net.HamNetItems in Ham_Net.HamNetItems.myFavourite.init : Swift.Bool, referenced from: Ham_Net.HamNetItems.myFavourite.init : Swift.Bool in AddNetView.o unsafeMutableAddressor of self #1 : Ham_Net.HamNetItems in Ham_Net.HamNetItems.netFrequency.init : Swift.String, referenced from: Ham_Net.HamNetItems.netFrequency.init : Swift.String in AddNetView.o unsafeMutableAddressor of self #1 : Ham_Net.HamNetItems in Ham_Net.HamNetItems.netController.init : Swift.String, referenced from: Ham_Net.HamNetItems.netController.init : Swift.String in AddNetView.o unsafeMutableAddressor of self #1 : Ham_Net.HamNetItems in Ham_Net.HamNetItems.selectDayIndex.init : Swift.Int, referenced from: Ham_Net.HamNetItems.selectDayIndex.init : Swift.Int in AddNetView.o unsafeMutableAddressor of self #1 : Ham_Net.HamNetItems in Ham_Net.HamNetItems.name.init : Swift.String, referenced from: Ham_Net.HamNetItems.name.init : Swift.String in AddNetView.o unsafeMutableAddressor of self #1 : Ham_Net.HamNetItems in Ham_Net.HamNetItems.hours.init : Swift.Int, referenced from: Ham_Net.HamNetItems.hours.init : Swift.Int in AddNetView.o unsafeMutableAddressor of self #1 : Ham_Net.HamNetItems in Ham_Net.HamNetItems.comment.init : Swift.String, referenced from: Ham_Net.HamNetItems.comment.init : Swift.String in AddNetView.o unsafeMutableAddressor of self #1 : Ham_Net.HamNetItems in Ham_Net.HamNetItems.minutes.init : Swift.Int, referenced from: Ham_Net.HamNetItems.minutes.init : Swift.Int in AddNetView.o unsafeMutableAddressor of self #1 : Ham_Net.HamNetItems in Ham_Net.HamNetItems.dateAdded.init : Foundation.Date, referenced from: Ham_Net.HamNetItems.dateAdded.init : Foundation.Date in AddNetView.o clang: error: linker command failed with exit code 1 (use -v to see invocation) == VERSION INFO: Tools: 15A5195k OS: 22G5059d PID: 8922 Model: MacBook Air Arch: arm64e

I have just installed Catalina Beta 4 and Xcode Beta 4..All went well.Now when i try and test my Apps, not matter the size or even if it's a new one just created in eiither Swift or SwiftUI, the Simulator give me an Error.DetailsCould not attach to pid : “724”Domain: IDEDebugSessionErrorDomainCode: 3Failure Reason: Error 1--Error 1Domain: IDEDebugSessionErrorDomainCode: 3--Any suggestions?Running on a Macbook Air 2015, all was well with Beta 3 versions.Cheers.Craig.