@bhepler
thank you for your reply.
Everything worked until the last command.
Then i got
pi@magicpi:~/MagicMirror $ npm build && npm start
> magicmirror@2.2.2 start /home/pi/MagicMirror
> sh run-start.sh
Starting MagicMirror: v2.2.2
Loading config ...
Loading module helpers ...
Initializing new module helper ...
Module helper loaded: MMM-cryptocurrency
Initializing new module helper ...
Module helper loaded: MMM-Wunderlist
No helper found for module: clock.
Initializing new module helper ...
Module helper loaded: MMM-ModuleScheduler
WARNING! Could not load config file. Starting with default configuration. Error found: Error: Module version mismatch. Expected 50, got 54.
Loading module helpers ...
Initializing new module helper ...
Module helper loaded: MMM-cryptocurrency
Initializing new module helper ...
Module helper loaded: MMM-Wunderlist
No helper found for module: clock.
Initializing new module helper ...
Module helper loaded: MMM-ModuleScheduler
App threw an error during load
Error: Module version mismatch. Expected 50, got 54.
at Error (native)
at process.module.(anonymous function) [as dlopen] (ELECTRON_ASAR.js:173:20)
at Object.Module._extensions..node (module.js:583:18)
at Object.module.(anonymous function) [as .node] (ELECTRON_ASAR.js:173:20)
at Module.load (module.js:473:32)
at tryModuleLoad (module.js:432:12)
at Function.Module._load (module.js:424:3)
at Module.require (module.js:483:17)
at require (internal/module.js:20:19)
at bindings (/home/pi/MagicMirror/modules/MMM-PIR-Sensor/node_modules/bindin gs/bindings.js:76:44)
Whoops! There was an uncaught exception...
Error: Module version mismatch. Expected 50, got 54.
at Error (native)
at process.module.(anonymous function) [as dlopen] (ELECTRON_ASAR.js:173:20)
at Object.Module._extensions..node (module.js:583:18)
at Object.module.(anonymous function) [as .node] (ELECTRON_ASAR.js:173:20)
at Module.load (module.js:473:32)
at tryModuleLoad (module.js:432:12)
at Function.Module._load (module.js:424:3)
at Module.require (module.js:483:17)
at require (internal/module.js:20:19)
at bindings (/home/pi/MagicMirror/modules/MMM-PIR-Sensor/node_modules/bindin gs/bindings.js:76:44)
MagicMirror will not quit, but it might be a good idea to check why this happene d. Maybe no internet connection?
If you think this really is an issue, please open an issue on GitHub: https://gi thub.com/MichMich/MagicMirror/issues
Launching application.
But it does not start.
I did also
pi@magicpi:~/MagicMirror $ npm list | grep electron
├─┬ electron@1.4.15
│ ├─┬ electron-download@3.3.0
│ ├─┬ electron-chromedriver@1.7.1
│ │ └─┬ electron-download@4.1.0
│ │ │ └─┬ electron-to-chromium@1.3.30
│ │ │ └── electron-releases@2.1.0
pi@magicpi:~/MagicMirror $ npm rebuild --runtime=electron --target=1.4.15 --disturl=https://atom.io/download/atom-shell --abi=50