Corel Draw 2022 crashes on startup

CD2022 - Flash screen comes up says initializing user interface... after about 20 seconds flash screen disappears and nothing.

usually the message on flash screen changes from initializing user interface to loading user settings to finally - creating application environment

then it opens and all is good.

At the moment it just show initializing user interface and crashes after about 20 seconds

Was working fine last Friday.

I have tried pressing F8 while starting, asks if I want to overwrite workspace but same result

CDraw 21, 2020, 2019 all start fine.

I can continue to work in CDraw2021, but some of the files I need are in 2022 format.

Any ideas or help most welcome.