Hi
It didn't work...
But so I've searched this folder... And I've opened the "gui.json" and found an historic of the searches in "Quality Check"... And in the history, there was a huge text i've put there by mistake, with a quick "Ctrl V + enter", I suppose, after I failed to do the correct Ctrl C.
And so it was the "history zone" in the windows whose size fitted the wront text...
I tried to delete this text and save the json (in wordpad)... It doesn't work. The format was probably no good, Wordpad was able to open the json, not to save it properly... So Calibre goes back to basic setting, farewell to my personalisation, extension, etc...
Anyway, I went to my last "calibre save" elsewhere on the HD and it xas not to old, 6 month... So I paste the saved gui.json in the folder and I found back my Calibre, almost as good as new...
Quality Check works again... Pheewww !
Thanks for your help, anyway
