Cubase closes

I have problems with Cubae 9.5 When loading some (not all) Waves plugins, the program is closed; what did not happen with cubase 9.
In fact, I had to go back to him and the 9.5 leave it in oblivion.
Where do I go?
Please help


Are your Waves plug-ins up-to-date, please?

absolutely. In fact, some plugins I bought online less than a month ago. In addition, they work perfectly in cubase 9.
thanks for your help