PC player crashes if transcoding wav24-192

[tgb]

Hi,
I face a strange problem :
I have Minim installed on my Syno (DS415+, DMS up-to-date).
I play files with a player on my PC, then files are sent to an USB>spdif interface.

When Minim transcodes (all files, flac 16/24b, mp3 etc...) to wav24;192, the player crashes (MediaMonkey, works under Winx86) or freezes during 20s before playing the file (JRiver is 64bits).
It happens only to some files.

After "investigation", it appears that this happens only to files with a longer path name than the files the player can read without any issue.
Is there is an upper limit of path name regarding transcoding ?

The tricky "solution" I found is to rename all files with long path/name by numbers "01" "02" etc... in each folder (1 folder = 1 album).

The other point is that without transcoding : no issue with the players.

Does someone face that issue ? any "smarter" solution than renaming ?
Thanks
Rgds