I have both V7 and V9 installed. As I do collaborative projects I need too have both installed. While this is an edge case it may be useful to others.
With a V9 project I accidentally open the project file (.kicad_pro) using V7. I realized what I had done and closed the project. I then opened the project using V9, in the PCB editor all of the footprints are now missing, I was unable to find a way to enable them so I can see them.
In the end, opening a V9 project and closing it in V7 changes two files in the project.
The .kicad_pro and .kicad_prl files. The changes made to the .kicad_prl file are causing this issue.
Repro:
Copy a V9 project to a new folder.
Open the project with V9.
The footprints show up as expected.
Close the project.
Open the project with V7
Close the project without making any changes or opening the schematic or PCB.
(When closed, V7 changes the .kicad_pro and .kicad_prl files)
Open the project with V9.
The footprints no longer show up in the PDB editor.
I don’t have a fix for this. It’s just interesting behavior and created a lot of confusion.
-Neil
