$ ./iobroker upgrade self
npm install iobroker.js-controller --production --prefix "C:/Program Files/ioBroker"
ERROR: 
module.js:340
    throw err;
    ^
Error: Cannot find module 'C:\Program Files\ioBroker\node_modules\iobroker.js-controller\node_modules\npm\lib/build.js'
    at Function.Module._resolveFilename (module.js:338:15)
    at Function.Module._load (module.js:280:25)
    at Module.require (module.js:364:17)
    at require (module.js:380:17)
    at Object.defineProperty.get (C:\Program Files\ioBroker\node_modules\iobroker.js-controller\node_modules\npm\lib\npm.js:191:15)
    at C:\Program Files\ioBroker\node_modules\iobroker.js-controller\node_modules\npm\lib\install.js:1056:18
    at asyncMap (C:\Program Files\ioBroker\node_modules\iobroker.js-controller\node_modules\npm\node_modules\slide\lib\async-map.js:27:18)
    at C:\Program Files\ioBroker\node_modules\iobroker.js-controller\node_modules\npm\lib\install.js:676:7
    at asyncMap (C:\Program Files\ioBroker\node_modules\iobroker.js-controller\node_modules\npm\node_modules\slide\lib\async-map.js:27:18)
    at C:\Program Files\ioBroker\node_modules\iobroker.js-controller\node_modules\npm\lib\install.js:655:5

ERROR: process exited with code 8