impkin@limpkin-VirtualBox:~/mooltiapp$ npm run release

> MooltiApp@0.0.1 prerelease /home/limpkin/mooltiapp
> node build/target.js

Preparing Target: release

> MooltiApp@0.0.1 release /home/limpkin/mooltiapp
> build

Using electron-builder.json configuration file
Rebuilding native production dependencies for linux:x64
Packaging for linux x64 using electron 1.6.4 to dist/linux-unpacked
Unhandled rejection Error: Exit code: ENOENT. spawn icns2png ENOENT
    at /home/limpkin/mooltiapp/node_modules/electron-builder-util/src/util.ts:75:16
    at exithandler (child_process.js:212:5)
    at ChildProcess.errorhandler (child_process.js:224:5)
    at emitOne (events.js:96:13)
    at ChildProcess.emit (events.js:191:7)
    at Process.ChildProcess._handle.onexit (internal/child_process.js:213:12)
    at onErrorNT (internal/child_process.js:367:16)
    at _combinedTickCallback (internal/process/next_tick.js:80:11)
    at process._tickCallback (internal/process/next_tick.js:104:9)
From previous event:
    at exec (/home/limpkin/mooltiapp/node_modules/electron-builder-util/src/util.ts:53:3)
    at /home/limpkin/mooltiapp/node_modules/electron-builder/src/targets/LinuxTargetHelper.ts:168:28
    at Generator.next (<anonymous>)
    at runCallback (timers.js:666:20)
    at tryOnImmediate (timers.js:639:5)
    at processImmediate [as _immediateCallback] (timers.js:611:5)
From previous event:
    at LinuxTargetHelper.createFromIcns (/home/limpkin/mooltiapp/node_modules/electron-builder/out/targets/LinuxTargetHelper.js:216:11)
    at /home/limpkin/mooltiapp/node_modules/electron-builder/src/targets/LinuxTargetHelper.ts:54:25
From previous event:
    at LinuxTargetHelper.computeDesktopIcons (/home/limpkin/mooltiapp/node_modules/electron-builder/out/targets/LinuxTargetHelper.js:84:11)
    at new LinuxTargetHelper (/home/limpkin/mooltiapp/node_modules/electron-builder/src/targets/LinuxTargetHelper.ts:17:23)
    at getHelper (/home/limpkin/mooltiapp/node_modules/electron-builder/src/linuxPackager.ts:32:18)
    at outDir (/home/limpkin/mooltiapp/node_modules/electron-builder/src/linuxPackager.ts:61:122)
    at mapper (/home/limpkin/mooltiapp/node_modules/electron-builder/src/targets/targetFactory.ts:49:16)
    at LinuxPackager.createTargets (/home/limpkin/mooltiapp/node_modules/electron-builder/src/linuxPackager.ts:61:7)
    at createTargets (/home/limpkin/mooltiapp/node_modules/electron-builder/src/targets/targetFactory.ts:56:12)
    at /home/limpkin/mooltiapp/node_modules/electron-builder/src/packager.ts:242:28
From previous event:
    at Packager.doBuild (/home/limpkin/mooltiapp/node_modules/electron-builder/out/packager.js:379:11)
    at /home/limpkin/mooltiapp/node_modules/electron-builder/src/packager.ts:170:52
    at Generator.next (<anonymous>)
    at runCallback (timers.js:666:20)
    at tryOnImmediate (timers.js:639:5)
    at processImmediate [as _immediateCallback] (timers.js:611:5)
From previous event:
    at Packager.build (/home/limpkin/mooltiapp/node_modules/electron-builder/out/packager.js:274:11)
    at /home/limpkin/mooltiapp/node_modules/electron-builder/src/builder.ts:198:33
    at Generator.next (<anonymous>)
From previous event:
    at build (/home/limpkin/mooltiapp/node_modules/electron-builder/out/builder.js:70:21)
    at Object.<anonymous> (/home/limpkin/mooltiapp/node_modules/electron-builder/out/cli/build-cli.js:71:41)
    at Module._compile (module.js:571:32)
    at Object.Module._extensions..js (module.js:580:10)
    at Module.load (module.js:488:32)
    at tryModuleLoad (module.js:447:12)
    at Function.Module._load (module.js:439:3)
    at Module.runMain (module.js:605:10)
    at run (bootstrap_node.js:427:7)
    at startup (bootstrap_node.js:148:9)
    at bootstrap_node.js:542:3

Building AppImage for arch x64
Error: Exit code: ENOENT. spawn icns2png ENOENT
    at /home/limpkin/mooltiapp/node_modules/electron-builder-util/src/util.ts:75:16
    at exithandler (child_process.js:212:5)
    at ChildProcess.errorhandler (child_process.js:224:5)
    at emitOne (events.js:96:13)
    at ChildProcess.emit (events.js:191:7)
    at Process.ChildProcess._handle.onexit (internal/child_process.js:213:12)
    at onErrorNT (internal/child_process.js:367:16)
    at _combinedTickCallback (internal/process/next_tick.js:80:11)
    at process._tickCallback (internal/process/next_tick.js:104:9)
From previous event:
    at exec (/home/limpkin/mooltiapp/node_modules/electron-builder-util/src/util.ts:53:3)
    at /home/limpkin/mooltiapp/node_modules/electron-builder/src/targets/LinuxTargetHelper.ts:168:28
    at Generator.next (<anonymous>)
    at runCallback (timers.js:666:20)
    at tryOnImmediate (timers.js:639:5)
    at processImmediate [as _immediateCallback] (timers.js:611:5)
From previous event:
    at LinuxTargetHelper.createFromIcns (/home/limpkin/mooltiapp/node_modules/electron-builder/out/targets/LinuxTargetHelper.js:216:11)
    at /home/limpkin/mooltiapp/node_modules/electron-builder/src/targets/LinuxTargetHelper.ts:54:25
From previous event:
    at LinuxTargetHelper.computeDesktopIcons (/home/limpkin/mooltiapp/node_modules/electron-builder/out/targets/LinuxTargetHelper.js:84:11)
    at new LinuxTargetHelper (/home/limpkin/mooltiapp/node_modules/electron-builder/src/targets/LinuxTargetHelper.ts:17:23)
    at getHelper (/home/limpkin/mooltiapp/node_modules/electron-builder/src/linuxPackager.ts:32:18)
    at outDir (/home/limpkin/mooltiapp/node_modules/electron-builder/src/linuxPackager.ts:61:122)
    at mapper (/home/limpkin/mooltiapp/node_modules/electron-builder/src/targets/targetFactory.ts:49:16)
    at LinuxPackager.createTargets (/home/limpkin/mooltiapp/node_modules/electron-builder/src/linuxPackager.ts:61:7)
    at createTargets (/home/limpkin/mooltiapp/node_modules/electron-builder/src/targets/targetFactory.ts:56:12)
    at /home/limpkin/mooltiapp/node_modules/electron-builder/src/packager.ts:242:28
From previous event:
    at Packager.doBuild (/home/limpkin/mooltiapp/node_modules/electron-builder/out/packager.js:379:11)
    at /home/limpkin/mooltiapp/node_modules/electron-builder/src/packager.ts:170:52
    at Generator.next (<anonymous>)
    at runCallback (timers.js:666:20)
    at tryOnImmediate (timers.js:639:5)
    at processImmediate [as _immediateCallback] (timers.js:611:5)
From previous event:
    at Packager.build (/home/limpkin/mooltiapp/node_modules/electron-builder/out/packager.js:274:11)
    at /home/limpkin/mooltiapp/node_modules/electron-builder/src/builder.ts:198:33
    at Generator.next (<anonymous>)
From previous event:
    at build (/home/limpkin/mooltiapp/node_modules/electron-builder/out/builder.js:70:21)
    at Object.<anonymous> (/home/limpkin/mooltiapp/node_modules/electron-builder/out/cli/build-cli.js:71:41)
    at Module._compile (module.js:571:32)
    at Object.Module._extensions..js (module.js:580:10)
    at Module.load (module.js:488:32)
    at tryModuleLoad (module.js:447:12)
    at Function.Module._load (module.js:439:3)
    at Module.runMain (module.js:605:10)
    at run (bootstrap_node.js:427:7)
    at startup (bootstrap_node.js:148:9)
    at bootstrap_node.js:542:3

npm ERR! Linux 4.8.0-41-generic
npm ERR! argv "/usr/bin/nodejs" "/usr/bin/npm" "run" "release"
npm ERR! node v7.7.4
npm ERR! npm  v4.1.2
npm ERR! code ELIFECYCLE
npm ERR! MooltiApp@0.0.1 release: `build`
npm ERR! Exit status 255
npm ERR!
npm ERR! Failed at the MooltiApp@0.0.1 release script 'build'.
npm ERR! Make sure you have the latest version of node.js and npm installed.
npm ERR! If you do, this is most likely a problem with the MooltiApp package,
npm ERR! not with npm itself.
npm ERR! Tell the author that this fails on your system:
npm ERR!     build
npm ERR! You can get information on how to open an issue for this project with:
npm ERR!     npm bugs MooltiApp
npm ERR! Or if that isn't available, you can get their info via:
npm ERR!     npm owner ls MooltiApp
npm ERR! There is likely additional logging output above.

npm ERR! Please include the following file with any support request:
npm ERR!     /home/limpkin/mooltiapp/npm-debug.log