Read the statement by Michael Teeuw here.
Unable to install dependencies, NPM install not working
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 @geeflaxx I’ve tried it on a fresh install of Jessie, but you’re right, I don’t have rpi-update either. Come to think of it, I did install Jessie Lite rather than the full verison. Not sure what exactly is stripped out of the Lite version and if it’s enough to make a difference to this? 
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 Did you try sudo apt-get install rpi-updateto install rpi-updat before running it?
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 http://www.bilder-upload.eu/show.php?file=df2e81-1477496516.png http://www.bilder-upload.eu/show.php?file=64ba61-1477496550.png it doesn’t work anything any other ideas ? :/ 
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 In your first screenshot the command install is missing 
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 hi guys, i have actually the same problem. 
 i started with a fresh version of jessie with pixel and followed the setup tutorial mentioned above.
 with update upgrade a new kernel was installed.
 i also recognized that there have been a few lines telling me that “electron” has now a new name…maybe this could be some reason?electron-quick-start is also not working!! 
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 oh i wanted to use ‘sudo rpi update’ 
 look on my second command i wanted to install iti forget remove the apt-get … but ‘sudo rpi update’ is still not working electron is the problem 
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 BRO I GOT IT !!! sudo apt-get upgrade and than npm install npm install I LOVE YOU ALL ! 
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 where exactly did you run npm install? 
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 Guys, thanks for your great help! I fixed this problem, now. Well, after fixing this problem I got several problem more :D 
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 cd ~/MagicMirror 

