Many problems with the transition from v6 to v7

[andrea_nocentini]

Good morning,
I’m no expert on this program so I apologize in advance for my misunderstanding.
i designed my pcb with the latest version 6 of kicad but discovering that there is a v7 version i decided to upgrade.
I’m having two big problems:

1. when i try to open schematics/PCB from kicad folder manager i get an error (link below) instead going to get the file from the PC documents it opens regularly.
2. I no longer have any 3D model of the components (for example an SMD capacitor 0805_2012, therefore common components previously present)

errors:

OSError: [Errno 34] Result too large: '/private/var/folders/7s/v5ly7vts1pvfqgtmw4q_zv240000gn/T/AppTranslocation/4C4BABE6-062B-4B54-9AC0-CDD40258F05F/d'

At:
<frozen importlib._bootstrap_external>(1573): _fill_cache
<frozen importlib._bootstrap_external>(1526): find_spec
<frozen importlib._bootstrap_external>(1395): _get_spec
<frozen importlib._bootstrap_external>(1423): find_spec
<frozen importlib._bootstrap>(925): _find_spec
<frozen importlib._bootstrap>(982): _find_and_load_unlocked
<frozen importlib._bootstrap>(1007): _find_and_load

can someone help me? thanks a lot in advance for your support!
edit:
the error message is also there when I try to create a new project with V7, so it’s not a problem of the old project

[davidsrsb]

We need to know about your OS etc to be able to comment
Help - About KiCad - Copy version info and paste here

[Tojan]

for the second question: the 3d model path variable changed between v6 and v7, so you have to either update your footprints or add the path variable manually.

[gkeeth]

Sort of. V7 interprets ${KICAD6_3DMODEL_DIR} as ${KICAD7_3DMODEL_DIR} as long as the user doesn’t have an explicitly defined ${KICAD6_3DMODEL_DIR} already. So if OP doesn’t see 3D models in standard library parts in v7, probably all they need to do is delete their ${KICAD6_3DMODEL_DIR} variable, or alternately set it to the same thing as the v7 variable.