There is some issues in the french localization with some strings related to training. A wrong replacement syntax has been used by the translator...
/GARMIN/Garmin/Text/french.ln4 line 3883 and 3885
09754e19 Répéter {1} fois 5274a3da Répéter {1} fois
To replace with :
09754e19 Répéter %1 fois 5274a3da Répéter %1 fois
@Garmin Please change it upstream.