1.6.0: Extension host terminated unexpectedly. Please reload the window to recover.

[tverboon]

Environment data

dotnet --info output:
.NET Command Line Tools (1.0.0-preview2-003121)

Product Information:
Version: 1.0.0-preview2-003121
Commit SHA-1 hash: 1e9d529bc5

Runtime Environment:
OS Name: Mac OS X
OS Version: 10.12
OS Platform: Darwin
RID: osx.10.12-x64

VS Code version:
1.8.1
C# Extension version:
1.6.0

Steps to reproduce

Open a C# file. Omnisharp is starting up and when it's almost finished: "Extension host terminated unexpectedly. Please reload the window to recover."

Expected behavior

No crash and a working C# environment. I don't see an exception in the Omnisharp log. It ends with:

[INFORMATION:OmniSharp#MSBuild] MSBUILD_EXE_PATH environment variable set to /Users/tverboon/.vscode/extensions/ms-vscode.csharp-1.6.0/bin/omnisharp/msbuild/MSBuild.dll
[INFORMATION:OmniSharp#MSBuild] MSBuildExtensionsPath environment variable set to /Users/tverboon/.vscode/extensions/ms-vscode.csharp-1.6.0/bin/omnisharp/msbuild
[INFORMATION:OmniSharp#MSBuild] MSBuildSDKsPath environment variable set to /Users/tverboon/.vscode/extensions/ms-vscode.csharp-1.6.0/bin/omnisharp/msbuild/Sdks
[INFORMATION:OmniSharp#MSBuild] No solution files found in '/Users/tverboon/Desktop/Code/Midmid'
[INFORMATION:OmniSharp.Script.ScriptProjectSystem] Detecting CSX files in '/Users/tverboon/Desktop/Code/Midmid'.
[INFORMATION:OmniSharp.Script.ScriptProjectSystem] Could not find any CSX files
[INFORMATION:OmniSharp.Startup] Configuration finished.

Actual behavior

"Extension host terminated unexpectedly. Please reload the window to recover." And C# is not working.

---

Extra info:
I did some extra testing as I had to reinstall the previous version. For me the extension causes a crash in 1.6-beta7. 1.6-beta6 and before are working.

[stickybun]

Same, with similar environment.

bash-3.2$ dotnet --info
.NET Command Line Tools (1.0.0-preview2-1-003177)

Product Information:
 Version:            1.0.0-preview2-1-003177
 Commit SHA-1 hash:  a2df9c2576

Runtime Environment:
 OS Name:     Mac OS X
 OS Version:  10.12
 OS Platform: Darwin
 RID:         osx.10.12-x64

VS Code version: 1.8.1
C# Extension version: 1.6.0

Appears to be after project selection that it crashes.

[rafaelanez]

Same, in win 7 environment.

C:\Users\xxxxxx>dotnet --info
.NET Command Line Tools (1.0.0-preview2-1-003177)

Product Information:
 Version:            1.0.0-preview2-1-003177
 Commit SHA-1 hash:  a2df9c2576

Runtime Environment:
 OS Name:     Windows
 OS Version:  6.1.7601
 OS Platform: Windows
 RID:         win7-x64

VS Code version: 1.8.1
C# Extension version: 1.6.0

This happens every time I select a *.cs file

[DustinCampbell]

That sounds pretty terrible, and I haven't seen it before. One idea I have is that a previous version of the extension did not uninstall cleanly. Try this:

1. Close Visual Studio Code.
2. Delete all versions of the C# extension from disk.
   • Windows: Go to %UserProfile%\.vscode\extensions\ and delete any ms-vscode.csharp.* extensions.
   • OSX/Linux: Go to ~/.vscode/extensions/ and delete any ms-vscode.csharp.* extensions.
3. Launch Visual Studio Code with your project and open a C# file.
4. At this point, Visual Studio Code should recommend installing the latest C# extension.
5. Go ahead and install the latest C# extension.

After re-installing, if the issue still occurs select "Help -> Toggle Developer Tools" and choose the "Console" tab. Let me know what you see in that tab.

[rafaelanez]

Hi, I reinstalled the extensions, opened a C# file and the issue happened again. This is the last part of the console log.

[Extension Host] Object {exception: null, error: "cannot open file:///c%3A/Users/rafaelanez/Source/R…Users\rafaelanez\Source\Repos\RoadMap\bower.json)", promise: Object, id: 3}
shell.ts:541cannot open file:///c%3A/Users/rafaelanez/Source/Repos/RoadMap/bower.json. Detail: Archivo no encontrado (c:\Users\rafaelanez\Source\Repos\RoadMap\bower.json)e.onUnexpectedError @ shell.ts:541(anonymous function) @ shell.ts:457e.onUnexpectedError @ errors.ts:68o @ errors.ts:88t.onUnexpectedExtHostError @ mainThreadErrors.ts:13e.handle @ abstractThreadService.ts:34s @ ipcRemoteCom.ts:269f @ ipcRemoteCom.ts:226_combinedTickCallback @ internal/process/next_tick.js:67_tickCallback @ internal/process/next_tick.js:98
6extensionHost.ts:293 [Extension Host] _isHugeProject = false (0)
extensionHost.ts:293 [Extension Host] Uncaught Exception:  SyntaxError: Unexpected token / in JSON at position 6A.logExtensionHostMessage @ extensionHost.ts:293A.onMessaage @ extensionHost.ts:232(anonymous function) @ extensionHost.ts:171emitTwo @ events.js:106emit @ events.js:191process.nextTick @ internal/child_process.js:744_combinedTickCallback @ internal/process/next_tick.js:67_tickCallback @ internal/process/next_tick.js:98
extensionHost.ts:293 [Extension Host] SyntaxError: Unexpected token / in JSON at position 6
    at fs.readFile (C:\Users\rafaelanez\.vscode\extensions\ms-vscode.csharp-1.6.0\out\src\assets.js:254:44)
    at C:\Users\rafaelanez\.vscode\extensions\ms-vscode.csharp-1.6.0\node_modules\graceful-fs\graceful-fs.js:78:16
    at FSReqWrap.readFileAfterClose [as oncomplete] (fs.js:445:3)A.logExtensionHostMessage @ extensionHost.ts:293A.onMessaage @ extensionHost.ts:232(anonymous function) @ extensionHost.ts:171emitTwo @ events.js:106emit @ events.js:191process.nextTick @ internal/child_process.js:744_combinedTickCallback @ internal/process/next_tick.js:67_tickCallback @ internal/process/next_tick.js:98
messageService.ts:126 El host de extensiones finalizó inesperadamente. Recargue la ventana para recuperarlo.e.doShow @ messageService.ts:126e.show @ messageService.ts:105A.onExit @ extensionHost.ts:328(anonymous function) @ extensionHost.ts:180emitTwo @ events.js:106emit @ events.js:191ChildProcess._handle.onexit @ internal/child_process.js:215
extensionHost.ts:332 Extension host terminated unexpectedly. Code:  7  Signal:  nullA.onExit @ extensionHost.ts:332(anonymous function) @ extensionHost.ts:180emitTwo @ events.js:106emit @ events.js:191ChildProcess._handle.onexit @ internal/child_process.js:215

[DustinCampbell]

That's very helpful -- thanks! It looks like it's failing in this code. Could you provide the text of your project's .vscode\tasks.json file? I'm wondering if the file is empty or the JSON is malformed.

[rafaelanez]

Hi. This is the content in my tasks.json. It was added by vscode.

{
    // See http://go.microsoft.com/fwlink/?LinkId=733558
    // for the documentation about the tasks.json format
    "version": "0.1.0",
    "command": "dotnet",
    "isShellCommand": true,
    "args": [],
    "tasks": [
        {
            "taskName": "build",
            "args": [
                "server"
            ],
            "isBuildCommand": true,
            "problemMatcher": "$msCompile"
        },
        {
            "taskName": "publish",
            "args": [
                "-o",
                "build",
                "-f",
                "netcoreapp1.0",
                "server"
            ],
            "isBuildCommand": true,
            "problemMatcher": "$msCompile"
        }
    ]
}

[DustinCampbell]

I think I see the problem. Please delete the comments and try again.

[rafaelanez]

Problem solved. It was the comments in tasks.json

[DustinCampbell]

Great! I'll code up a solution and release an update to the extension later today.

[tverboon]

That was quick! Removing the comments fixed it for me too. 👍

[DustinCampbell]

Glad to hear it. Working on a fix... 😄