When upgrading to 4.1 I get the following error while trying to run npm install :

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phantomjs@1.9.12 install /usr/local/lib/openproject/node_modules/phantomjs
node install.js

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Download already available at /tmp/phantomjs/phantomjs-1.9.8-linux-x86_64.tar.bz2
Extracting tar contents (via spawned process)
Removing /usr/local/lib/openproject/node_modules/phantomjs/lib/phantom
Phantom installation failed { [Error: EACCES, unlink '/usr/local/lib/openproject/node_modules/phantomjs/lib/phantom/ChangeLog']
  errno: -13,
  code: 'EACCES',
  path: '/usr/local/lib/openproject/node_modules/phantomjs/lib/phantom/ChangeLog' } Error: EACCES, unlink '/usr/local/lib/openproject/node_modules/phantomjs/lib/phantom/ChangeLog'
    at Error (native)

npm ERR! Linux 3.2.0-4-amd64
npm ERR! argv "/home/openproject/nodeenv/bin/node" "/home/openproject/nodeenv/bin/npm" "install"
npm ERR! node v0.12.4
npm ERR! npm  v2.10.1
npm ERR! code ELIFECYCLE
npm ERR! phantomjs@1.9.12 install: `node install.js`
npm ERR! Exit status 1
npm ERR!
npm ERR! Failed at the phantomjs@1.9.12 install script 'node install.js'.
npm ERR! This is most likely a problem with the phantomjs package,
npm ERR! not with npm itself.
npm ERR! Tell the author that this fails on your system:
npm ERR!     node install.js
npm ERR! You can get their info via:
npm ERR!     npm owner ls phantomjs
npm ERR! There is likely additional logging output above.

npm ERR! Please include the following file with any support request:
npm ERR!     /usr/local/lib/openproject/npm-debug.log