Unable to build distributable releases for Windows under OS X

Distributable releases works fine for OS X, but i’m having trouble with the windows release. As the docs says, I’ve installed Caskroom/cask/xquartz, wine and mono with brew, but when i try to run it fails:

    Packaging app for platform win32 x64 using electron v0.37.2
    Error: Failed with exit code: 1
    Output:
    Intentando compilar el paquete desde 'xxxxxx.nuspec'. 
    ManifestMetadata is required.
    ManifestMetadata is required.
        at ChildProcess.<anonymous> (/usr/local/lib/node_modules/electron-builder/node_modules/electron-winstaller-fixed/lib/spawn-promise.js:59:16)
        at emitTwo (events.js:100:13)
        at ChildProcess.emit (events.js:185:7)
        at maybeClose (internal/child_process.js:821:16)
        at Process.ChildProcess._handle.onexit (internal/child_process.js:211:5)
    From previous event:
        at processImmediate [as _immediateCallback] (timers.js:383:17)
    From previous event:
        at Object.createWindowsInstaller (/usr/local/lib/node_modules/electron-builder/node_modules/electron-winstaller-fixed/lib/index.js:207:16)
        at WinPackager.<anonymous> (/usr/local/lib/node_modules/electron-builder/src/winPackager.ts:123:50)
        at [object Generator].next (native)
    From previous event:
        at tsAwaiter (/usr/local/lib/node_modules/electron-builder/src/awaiter.ts:10:51)
        at Object.build (/usr/local/lib/node_modules/electron-builder/src/builder.ts:30:55)
        at Object.<anonymous> (/usr/local/lib/node_modules/electron-builder/src/build-cli.ts:41:2)
        at Module._compile (module.js:413:34)
        at Object.Module._extensions..js (module.js:422:10)
        at Module.load (module.js:357:32)
        at Function.Module._load (module.js:314:12)
        at Function.Module.runMain (module.js:447:10)
        at startup (node.js:139:18)
        at node.js:999:3

Packaging works fine, is the installer creation what fails.

[hryuk]

Ok, solved. All was caused due to a very old version of mono previously installed without brew, and when mono was launched the old version spawned. Removing the old version and checking that mono 4.2.X is used solved the issue, all is working perfectly right now.

Really thanks for you time @develar

[develar]

Na endlich. Thanks, so, we can tag 3.0 as latest.