and i’m on my work so i’m probably on proxy. ( i use KiCad only for my work )
Ah now i understand (for some reason i thought you where talking about something completely different. I thought you where talking about new footprint from wizard tools. Lack of coffee is a bad state.)
Assuming the “local library KiCad” folder contains the footprint libraries. Click on the plus next to it to show the contents.
Then you should be able to select all the .pretty directories you want to add. (left click on the first one, scroll down if necessary and left click on the last one while holding shift. You can also use crtl plus leftclick to select only some specific libs.) As soon as you have selected at least one .pretty directory the next button should get clickable.
haha yeah coffee helps a lot ! i will look if your method works. either way thanks !
It works only some .pretty files won’t work : Enclosures.pretty, Connectors_Amophenol.pretty, Housings_PGA.pretty, Relays_smd.pretty, Terminalblocks_Phoenix.pretty and Terminalblocks_wago.pretty.
I don’t know if i need these files for my work later. Is this an easy fix to get those files working again ?
All the other ones work fine now 
They might contain footprints that have unsuported features in them. (Might have features from kicad 5)
The library names seems suspiciously like you downloaded the official version 5 library (or parts of it) and tried to add it to kicad 4. There is a backport of said library intended to be used in kicad 4. More details see: Kicad 4.0.x backport release of kicad v5 library is now available on github.
You can also manually run the check compatibility script. Details see: How can i install a specific version of the footprint library? (Second entry)
I will try that another time. ( im fairly new to KiCad but it looks like something I could do ). thank you very much @Rene_Poschl for helping me finding my way in KiCad ! 
I’m trying you solution today and it’s working. I only get 2 files that i cannot open : CMakeModules and Sources ( i don’t know if these are important but it seems fine by me for now ).
Only the .pretty “files” contain footprints.
The Sources directory contains freecad sources for footprints that have been created using freecad plus kicad-stepup and the CMakeFiles directory holds the stuff needed by the packagers.
You folder must have " .pretty" format with all your footprints inside. You can add one folder per time.
Or multiple at once as i already described in my answer above.
So everything works now i can run Cvpcb and assign footprints and such. ( that was my goal here )
But there is ( Yet 
) another problem. I can see most libraries and footprint files and asign them.
I have made a 7555 timer ( It’s already in KiCad standard just wanted to try making my own part ). But for some reason i cant see the option for the SOIC Housings and my Housing_SOIC file is just in my library.
I don’t get in anymore 
Can you help me again?
Greetings,
Jasper
If you installed the backport lib (or the v5 lib) then you have the reorganized libraries. This means the Housings_xxxxx libs are now called Package_xxxx
For this reason you should really install not only the footprint libs but also the symbol libs from the same release.
Yeah i have installed the backport lib, I will try to download the symbol libs as well.
How do I change the old Symbol lib with the new one ?
There is no real centralized place for that. For existing projects you would need to change it manually. For new projects you can change the global template file. It is found in the kicad system directory in the template subfolder and is called kicad.pro.
Or you setup a master project that you copy around instead of creating a new project using kicad.
This is one of the things that will get a lot better with kicad 5
I hope so @Rene_Poschl I’m fairly new to KiCad so errors or problem fixing like this makes my gears grind. I hope KiCad fixes this soon so everybody can just use it without having to change things in order for it to work.
Will things like this also get fixed in KiCad 5 ?
Do I just replace the Kicad.pro file with the Symbol lib ?
Yes
No. it is a bit more complicated than that.
The kicad.pro file holds a list of libraries that will be added automatically to new projects. you would need to update that list.
The kicad.pro file also sets up the default symbol library search paths. You would need to update that if you place the new symbol lib somewhere else as the old system lib.
As this is a frequently asked question i will do some experiments and post something to the FAQ shortly. (Give me an hour or two.)