warn Error on lookup for github:systemjs/systemjs

When I am setting my jspm installation with the command:

jspm init

Then it just asks me for the initial config:

Would you like jspm to prefix the jspm package.json properties under jspm? [yes]:yes

Enter server baseURL (public folder path) [./]:app
Enter jspm packages folder [app/jspm_packages]:
Enter config file path [app/config.js]:
Configuration file app/config.js doesn't exist, create it? [yes]:yes
Enter client baseURL (public folder URL) [/]:
Do you wish to use a transpiler? [yes]:no

Right after that, I am getting this error message:

warn Error on lookup for github:systemjs/systemjs TypeError: "timeout" must be an unsigned integer at validateTimeout (child_process.js:612:11) at Object.exports.execFile (child_process.js:178:3) at exports.exec (child_process.js:136:18) at module.exports (/usr/local/lib/node_modules/jspm/node_modules/jspm-github/exec-git.js:64:5) at /usr/local/lib/node_modules/jspm/node_modules/jspm-github/github.js:382:7 at initializePromise (/usr/local/lib/node_modules/jspm/node_modules/rsvp/dist/rsvp.js:588:5) at new Promise (/usr/local/lib/node_modules/jspm/node_modules/rsvp/dist/rsvp.js:1076:31) at GithubLocation.lookup (/usr/local/lib/node_modules/jspm/node_modules/jspm-github/github.js:381:12) at /usr/local/lib/node_modules/jspm/lib/registry.js:117:30 at tryCatch (/usr/local/lib/node_modules/jspm/node_modules/rsvp/dist/rsvp.js:538:12) at invokeCallback (/usr/local/lib/node_modules/jspm/node_modules/rsvp/dist/rsvp.js:553:13) at /usr/local/lib/node_modules/jspm/node_modules/rsvp/dist/rsvp.js:628:16 at flush (/usr/local/lib/node_modules/jspm/node_modules/rsvp/dist/rsvp.js:2373:5) at _combinedTickCallback (internal/process/next_tick.js:73:7) at process._tickCallback (internal/process/next_tick.js:104:9)

Not sure what is happening right there. So I came here for some clues.

via Luillyfe