Command 'C_Cpp.ConfigurationEdit' not found.

[gainskills]

• VSCode Version: Code 1.18.0 (dcee2202709a4f223185514b9275aa4229841aa7, 2017-11-08T12:32:39.870Z)
• OS Version: Darwin x64 17.2.0 with XCode 9.1
• Extensions:

Extension	Author (truncated)	Version
Go	luk	0.6.67
python	ms-	0.8.0
cpptools	ms-	0.14.2

Log in VSCode dev tools:
I found that the issue had been reported and fixed on windows platform (#384) , but it should still exist in MAC OS.

[ms-vscode.cpptools] Cannot read property 'length' of undefined: TypeError: Cannot read property 'length' of undefined
at DefaultClient.createLanguageClient (/Users/kz/.vscode/extensions/ms-vscode.cpptools-0.14.2/out/src/LanguageServer/client.js:152:46)
at new DefaultClient (/Users/kz/.vscode/extensions/ms-vscode.cpptools-0.14.2/out/src/LanguageServer/client.js:92:35)
at Object.createClient (/Users/kz/.vscode/extensions/ms-vscode.cpptools-0.14.2/out/src/LanguageServer/client.js:71:12)
at new ClientCollection (/Users/kz/.vscode/extensions/ms-vscode.cpptools-0.14.2/out/src/LanguageServer/clientCollection.js:19:42)
at Object.activate (/Users/kz/.vscode/extensions/ms-vscode.cpptools-0.14.2/out/src/LanguageServer/extension.js:41:15)
at util.readFileText.then.catch.then (/Users/kz/.vscode/extensions/ms-vscode.cpptools-0.14.2/out/src/main.js:119:28)
at
e.onUnexpectedError @ workbench.main.js:sourcemap:10
(anonymous) @ workbench.main.js:sourcemap:10
e.onUnexpectedError @ workbench.main.js:sourcemap:9
o @ workbench.main.js:sourcemap:9
e.$onUnexpectedError @ workbench.main.js:sourcemap:9
e.invoke @ workbench.main.js:sourcemap:9
e._invokeHandler @ workbench.main.js:sourcemap:9
e._receiveOneMessage @ workbench.main.js:sourcemap:9
(anonymous) @ workbench.main.js:sourcemap:9
(anonymous) @ workbench.main.js:sourcemap:9
e.invoke @ workbench.main.js:sourcemap:9
e.fire @ workbench.main.js:sourcemap:9
(anonymous) @ workbench.main.js:sourcemap:9
emitOne @ events.js:96
emit @ events.js:191
readableAddChunk @ _stream_readable.js:178
Readable.push @ _stream_readable.js:136
onread @ net.js:560
workbench.main.js:sourcemap:9 command 'C_Cpp.ConfigurationEdit' not found
e.doShow @ workbench.main.js:sourcemap:9
e.show @ workbench.main.js:sourcemap:9
e.resume @ workbench.main.js:sourcemap:9
(anonymous) @ workbench.main.js:sourcemap:10
e.invoke @ workbench.main.js:sourcemap:9
e.fire @ workbench.main.js:sourcemap:9
(anonymous) @ workbench.main.js:sourcemap:9

[aseeon]

@hanbaobao2005

It re-appeared on Windows 10 64 bit too.

Editor:
Version 1.18.0
Commit dcee2202709a4f223185514b9275aa4229841aa7
Architecture x64

Extension:
cpptools: 0.14.2

[bobbrow]

I have a fix for this. Until the fix comes out, you can replace line 152 in that client.js file from this:
if (vscode.workspace.workspaceFolders.length > 1) {
to this:
if (vscode.workspace.workspaceFolders && vscode.workspace.workspaceFolders.length > 1) {

[aseeon]

Just wanted to confirm the fix indeed worked fine, and alleviated all of my issues!

[gainskills]

@bobbrow Your solutions works, Thanks,

[Alistair401]

@bobbrow the fix you've suggested has fixed it for me

[bobbrow]

This should be fixed with version 0.14.3

[hamaney]

This issue happens also if u try to edit c_cpp_properties.json file while it is staged by git.