Read the statement by Michael Teeuw here.
some modules are not showing on screen
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 Oh I saw its on all the paths (the running also). 
 But the error at all the modules areERROR on loading script XYZThe scripts are in the given folder. 
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 @stephen a file system problem again. U need to run fsck , the Unix chkdsk. 
 But u can’t run on the boot drive while system is running …Google search ‘fsck raspberry pi’ I have another Linux system i can use. 
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 oh lord… I quess I have something… 
 WTF.I quess it was my mistake… Was it? Some modules are in /MagicMirror/node_modules/
 and some are in/MagicMirror/modules
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 @stephen node_modules are the ones download by install in support of the mirror… all good modules are the add ons to the MagicMirror 
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 Maybe it has something to do with the npm install sometimes I had to run (as discribed at the mod-pages)? I’ll try to pull the modules in the right folder and give it a try 
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 @stephen no… don’t change anything… npm install built the node_modules folder… it is ok… 
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 Hell…thats it! I’ve reinstalled the “not-working” / not showing modules INTO the /modules folder and it simply works! Have a big thanks @sdetweil ! Its not always a filesystem-problem, sometimes the problem is right in front of the keyboard :D 
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 @stephen cool 
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 @stephen sorry, I misread your 1st post… I took it to mean it HAD been working and all of a sudden it was not… got to learn to read more carefully! can u mark your problem resolved? 
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 @stephen You can start MM with developer mode. This can be done by using the cmd shell inside the MagicMirror folder and run the following command: npm start devor when you’re MM is already running use the shortcut ctrl+shift+I. This article from @Mykle1 gives you all the info you need. All of this can be done will using VNC. (I use VNC as well :smiling_face_with_smiling_eyes: ) Good luck! 
