That is not the location for the SharedPreferences.json on Mac, it should be in the user library:
~/Library/Application Support/SketchUp/SketchUp 2020/SketchUp
Ah, I thought you where looking in the Main Library or something.
You have to be sure SketchUp is closed, and preferably use a plain texteditor.
You will also have to have the right permissions tos save on the location.
To test, while SketchUp is still open, navigate to the location.
%AppData%Roaming\SketchUp\SketchUp 2021\SketchUp
check the timestamp of the file.
Close SketchUp and check again.
Here is a part that controls the shortcuts:
“Settings”: {
“Num_Shortcuts”: 26,
“Shortcut_1”: “0 0 0 H selectDollyTool:”,
“Shortcut_10”: “0 0 0 P selectPushPullTool:”,
“Shortcut_11”: “0 0 0 R selectRectangleTool:”,
This suggests that SketchUp might have been installed incorrectly on your PC ?
You don’t need to reinstall but a ‘Repair’ should fix things…
If should not affect any installed extensions or customized changes you might have made…
Log into Windows as your normal user-account.
Ensure that SketchUp is closed.
Find the relevant SketchUp installer’s exe file - usually in your Downloads folder ?
Select that installer’s exe file icon, right-click > context-menu > “Run as administrator”
When prompted choose “Repair”…
Restart SketchUp and all folder/file permissions should now be correct.
If you double-click an installer’s exe file to ‘Run’ it it is not the same thing - even if your user-account has admin-powers.
It can lead to all kinds of unexpected and unpredictable issues - such as preferences not getting saved and so on…