On "./components/com_comprofiler/plugin/language/fr-fr/language.php", lines 2112 & 2113, there is an inversion between the singular and plural sentences :
Currently, we have :
'YOU_HAVE_COUNT_NEW_PRIVATE_MESSAGE' => 'Vous avez [count] nouveaux
messages
privé.',
'YOU_HAVE_COUNT_NEW_PRIVATE_MESSAGES' => 'Vous avez [count] nouveau message privé.',
The correct sentences are :
'YOU_HAVE_COUNT_NEW_PRIVATE_MESSAGE' => 'Vous avez [count] nouveau message privé.',
'YOU_HAVE_COUNT_NEW_PRIVATE_MESSAGES' => 'Vous avez [count] nouveaux
messages
privés
.',