"Dossier de compilation disparu ou n'a pas pu être créé"

slamou alikom,
hi all, i'm newbie in arduino development and i have made a small mistake :blush: when i modify "preferences.txt" ....
now when i try to compile my sketch this error message appear always "Dossier de compilation disparu ou n'a pas pu être créé" :0 !!!!!!!!!!!!!!!!!!!!!!!!
can someone have any idea how to fix this !!!!
( i sorry for english language mistakes !)

and thxs for all ......... :slight_smile: