Path must be a string. Received undefined #5005

Issue Id: d62ec6f0-0926-ab33-6205-be52435fc002

Versions
- 0.10.13-insider
- 17fa1cb
Stack
TypeError: Path must be a string. Received undefined
at assertPath (path.js:8:11)
at Object.win32.join (path.js:221:5)
at new ConfigurationProperties (C:\Users\a123.vscode-insiders\extensions\ms-vscode.cpptools-0.4.1\out\src\C_Cpp_ConfigurationProperties.js:24:35)
at Object.setupConfigurationProperties (C:\Users\a123.vscode-insiders\extensions\ms-vscode.cpptools-0.4.1\out\src\C_Cpp_ConfigurationProperties.js:163:15)
at C:\Users\a123.vscode-insiders\extensions\ms-vscode.cpptools-0.4.1\out\src\C_Cpp.js:70:66
at FSReqWrap.oncomplete (fs.js:82:15)