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Cannot open file, NullReferenceException in MonoDevelop.SourceEditor.FileRegistry.HasMultipleIncorrectEolMarkers
VSmac 7.5.1254 can't open some source files. The log reports:
ERROR [2018-05-09 16:02:44Z]: The file <file path> could not be opened. System.NullReferenceException: Object reference not set to an instance of an object at MonoDevelop.SourceEditor.FileRegistry.get_HasMultipleIncorrectEolMarkers () [0x00025] in /Users/builder/data/lanes/5965/498923ea/source/monodevelop/main/src/addins/MonoDevelop.SourceEditor2/MonoDevelop.SourceEditor/FileRegistry.cs:53 at MonoDevelop.SourceEditor.SourceEditorWidget.EnsureCorrectEolMarker (System.String fileName) [0x00033] in /Users/builder/data/lanes/5965/498923ea/source/monodevelop/main/src/addins/MonoDevelop.SourceEditor2/MonoDevelop.SourceEditor/SourceEditorWidget.cs:806 at MonoDevelop.SourceEditor.SourceEditorView.Load (System.String fileName, System.Text.Encoding loadEncoding, System.Boolean reload) [0x00183] in /Users/builder/data/lanes/5965/498923ea/source/monodevelop/main/src/addins/MonoDevelop.SourceEditor2/MonoDevelop.SourceEditor/SourceEditorView.cs:939 at MonoDevelop.SourceEditor.SourceEditorView.Load (MonoDevelop.Ide.Gui.FileOpenInformation fileOpenInformation) [0x00000] in /Users/builder/data/lanes/5965/498923ea/source/monodevelop/main/src/addins/MonoDevelop.SourceEditor2/MonoDevelop.SourceEditor/SourceEditorView.cs:843 at MonoDevelop.Ide.Editor.TextEditorViewContent+<Load>d__20.MoveNext () [0x0004e] in /Users/builder/data/lanes/5965/498923ea/source/monodevelop/main/src/core/MonoDevelop.Ide/MonoDevelop.Ide.Editor/TextEditorViewContent.cs:223 --- End of stack trace from previous location where exception was thrown --- at System.Runtime.ExceptionServices.ExceptionDispatchInfo.Throw () [0x0000c] in /Users/builder/jenkins/workspace/build-package-osx-mono/2017-12/external/bockbuild/builds/mono-x64/mcs/class/referencesource/mscorlib/system/runtime/exceptionservices/exceptionservicescommon.cs:152 at System.Runtime.CompilerServices.TaskAwaiter.ThrowForNonSuccess (System.Threading.Tasks.Task task) [0x00037] in /Users/builder/jenkins/workspace/build-package-osx-mono/2017-12/external/bockbuild/builds/mono-x64/mcs/class/referencesource/mscorlib/system/runtime/compilerservices/TaskAwaiter.cs:187 at System.Runtime.CompilerServices.TaskAwaiter.HandleNonSuccessAndDebuggerNotification (System.Threading.Tasks.Task task) [0x00028] in /Users/builder/jenkins/workspace/build-package-osx-mono/2017-12/external/bockbuild/builds/mono-x64/mcs/class/referencesource/mscorlib/system/runtime/compilerservices/TaskAwaiter.cs:156 at System.Runtime.CompilerServices.TaskAwaiter.ValidateEnd (System.Threading.Tasks.Task task) [0x00008] in /Users/builder/jenkins/workspace/build-package-osx-mono/2017-12/external/bockbuild/builds/mono-x64/mcs/class/referencesource/mscorlib/system/runtime/compilerservices/TaskAwaiter.cs:128 at System.Runtime.CompilerServices.TaskAwaiter.GetResult () [0x00000] in /Users/builder/jenkins/workspace/build-package-osx-mono/2017-12/external/bockbuild/builds/mono-x64/mcs/class/referencesource/mscorlib/system/runtime/compilerservices/TaskAwaiter.cs:113 at MonoDevelop.Ide.Gui.LoadFileWrapper+<Invoke>d__8.MoveNext () [0x00165] in /Users/builder/data/lanes/5965/498923ea/source/monodevelop/main/src/core/MonoDevelop.Ide/MonoDevelop.Ide.Gui/Workbench.cs:1625
I assume this happens on files with mixed line endings (all files used LF back in Xamarin Studio, then VSmac started to put CRLF all over the place despite the project being set to use Native live endings).
In fact, after re-saving the file from an external editor I could open the file in VSmac.
We appreciate you taking the time to report this problem. We are currently prioritizing problems that are impacting a broad set of our customers, so we may not be able to investigate this one immediately. We know this problem is important to you, so we will continue to monitor it.
Thank you for your feedback! We have fixed the problem in an upcoming release. Thank you for helping us build a better Visual Studio!
The fix for this issue is now available in Visual Studio 2017 for Mac version 7.6 Preview 4 (7.6.0.2003)). If you'd like to try it out, you can access it by changing the Update Channel under Visual Studio > Check for Updates. You can roll back to Stable by reverting the Update Channel. Thank you for helping us build a better Visual Studio!
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