Cubase 10.5 pro - Plugins frozen

I have Cubase 10.5 pro. Plugins Bais FX 2, Waves GTR3, Guitar Rig6 will not load properly. Each of those mentioned are frozen on the screen and i’m unable to use them. They all work as a stand alone and all work in FL studio so what is the problem with Cubase 10.5 ?
All Cubase plugins work !
Does anyone else have this problem, any ideas what might be going wrong ?