Can't Open Schematic and PCB Editor [KiCad 7.0.0]

[sarfat96]

Window 11

KiCad 7.0.0 was successfully installed without uninstalling KiCad 6 first, but after that I can’t open any KiCad 6.0.5 project using KiCad 7. KiCad 7 will be force close.

Then I uninstalled KiCad 6, it works - I can use KiCad 7 !

Sorry if this post not informative, I will delete it if needed.

Edit:
I open KiCad 6 file but I don’t know why my design showing like this?

Edit:
When I click B (filled zone) the gap between edge.cuts is loss

Before

After

[sarfat96]

Successfully rendered on KiCad 7
Design 1

Design 2

[cronJ]

Locked items are now shown with this violet shadows. Can be found here:

Had the same in my design.

[craftyjon]

@sarfat96

When I click B (filled zone) the gap between edge.cuts is loss

Check your copper-edge clearance in board setup. KiCad 6 had a bug where this was ignored and the zones kept the copper-copper clearance away from the edge.