There's no lr-mess-jaguar in RetroPie. If you're using @folly's scripts, then please post it that topic.

@mark_s04 Finally i made it myself with using lha files instead of adf.

@mitu es_configs I restored the backed up version and it’s booting again

@janderclander14

Thanks for the fps check.
For the sound, It depends, for some 2D games, the sound is not that bad (not far from a good experience).
In the Hash file , located in the BIOS/mame/hash folder , they commented slightly on the playability.
Some games are not playables even on both emulators.
I'm running Zool 2 or Bubsy at 49 FPS with Lr-Mess and 33 FPS with Lr- virtualjaguar (Big difference)

@antnned Not trying to admonish you, at all. As I said, it's just friendly advice.

@NintendoFan64 Please do not post a support request without first reading and following the advice in https://retropie.org.uk/forum/topic/3/read-this-first