[myron]

Did you check your renamer settings?
Do you have the ASCII replacements ticked?

Because the name we generate has already no accents.... and there is no filesystem touched yet!

Code:

2017-10-10 17:07:50,091 DEBUG [tmmpool-rename-T1] o.t.core.movie.MovieRenamer:218 - path expression: $T ($Y) {[$3]}
2017-10-10 17:07:50,091 DEBUG [tmmpool-rename-T1] o.t.core.movie.MovieRenamer:219 - file expression: $T ($Y){ [$3]}{ [$K]}{.$3}{.$F}.$S
2017-10-10 17:07:50,092 DEBUG [tmmpool-rename-T1] o.t.core.movie.MovieRenamer:239 - movie willBeMulti?: false
2017-10-10 17:07:50,092 DEBUG [tmmpool-rename-T1] org.tinymediamanager.core.Utils:631 - try to move folder
/Volumes/HD CINE 001/Astérix en Bretaña (1986) <---- before
to
/Volumes/HD CINE 001/Asterix en Bretana (1986) <---- after