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Xcode 11.6 crashes after Source Control commit with more than one Editor open
0 My development was essentially stopped because of this Xcode problem. Whenever I did a Source Control commit, the next time that I opened the project what opens in the Project Navigator is not the whole project but just one line: the name of the project. I could get around this by going to Source Tree and unchecking the UserState.xstate file. Then the project opened ok, but if I Build, Xcode immediately crashed with the same crash every time. Sometimes I could get past this by closing the project, deleting the DerivedData file, quitting and restarting Xcode. I noticed that this causes Xcode to re-index. I submitted a bug report to Apple but have not heard anything. I have tried going into the xcode.project package and deleting the file, but that doesn't work either. I even tried rebooting the Mac but that did not solve the problem either.  However, it looks like I solved the problem by doing Xcode>Editor>Show Editor Only. What led me to this was the crashlog, which shows a crash in the IDEEditor: Process:               Xcode [4453] Path:                  /Applications/Xcode.app/Contents/MacOS/Xcode Identifier:            com.apple.dt.Xcode Version:               11.6 (16141) Build Info:            IDEFrameworks-16141000000000000~2 (11E708) App Item ID:           497799835 App External ID:       836655024 Code Type:             X86-64 (Native) Parent Process:        ??? [1] Responsible:           Xcode [4453] User ID:               503 Date/Time:             2020-07-22 13:40:00.643 -0500 OS Version:            Mac OS X 10.15.4 (19E287) Report Version:        12 Anonymous UUID:        79A51667-E346-704F-A7E9-60A204A762E4 Time Awake Since Boot: 4300 seconds System Integrity Protection: enabled Crashed Thread:        0  Dispatch queue: com.apple.main-thread Exception Type:        EXCCRASH (SIGABRT) Exception Codes:       0x0000000000000000, 0x0000000000000000 Exception Note:        EXCCORPSENOTIFY Application Specific Information: ProductBuildVersion: 11E708 ASSERTION FAILURE in /Library/Caches/com.apple.xbs/Sources/IDEFrameworks/IDEFrameworks-16141/IDEKit/Behaviors/Alerts/ShowEditorAlert/IDEShowEditorAlert.m:143 Details:  Assertion failed: [editorArea canAddEditorAreaSplitAfterEditorAreaSplit:lastActiveEditorAreaSplit layout:IDEEditorMultipleSplitRelativeLayoutDefault] Object:   <IDEShowEditorAlert> Method:   +createEditorAreaSplitForEditorArea:lastActiveEditorAreaSplit: Thread:   <NSThread: 0x7fb634c0df60>{number = 1, name = main} Open FDs: 53/9472 Hints:  ```
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Jul ’20