Thank you so much for your reply, and sorry I juste realised I never answered!...
It did work but now I have Lib Fredo [v12.8(a)] and the SketchUcation Toolset [v4.2.6 or 7] and round corners is just not appearing in my tools anymore, it appears on the extension manager but not in my tools.
I have tried to reinstall all but it is still not working, I actually purchased 3 times the license (perpetual) thinking it might be the problem but I won't buy again

Can someone help me to resolve this?... Thank you ever so much

Hi everyone!

Since I have updated the 2022 version of SKP round corners just does not load and is nowhere to be found in my tools.
I have LibFredo6 version 8.7m on Sketchucation 12.8a
And there is a note saying:

"Tentative bug fixing for menu error at startup"

And when I load sketch up another note says:

Some Fredo6 Plugins will not load

*Current SketchUp Version: 22.0.353
Current LibFredo6 version: 8.7m

FredoCorner: requires LibFredo6 version >= 124
FredoScale: requires LibFredo6 version >= 124*

I guess I have > than 124 so I am really confused... I tried to re install all many times and restart all but nothing did it.
Any advices?... I feel a bit dumb dumb ahahah