"new event" issue Noté 4 sur 5 étoiles

Hello, for some reason since last update TB 17.0.3 and lightning 1.9.1 I am unable to add new event in thr Calendar. Nothing happens upon the pressing of the "new event" button and it will turn grey (inactive) until the next restart. Tried to re-install addon and TB - still no success. Any suggestions?

Cette critique concerne une version précédente du module (1.9). 

If you really mean 1.9.1, please use the blog for support. Please post error messages from the error console there. https://blog.mozilla.org/calendar/