Hi and welcome to Arturia forums.
That's not nice to exsperience. But usually things can fixed in one way or another. We hope in this case too.
How long ago since you updated the last time?
Have you had moved your old plugins away from it's install path to a folder Ableton read?
Have you checked, that you plugins is in the right location that Ableton read, and that all the relevant settings in Ableton has'nt changed?
FYI: If needed, then you can allways download and install older versions of the plugins. But i assume, that your problem is something else.