Windows 11 pro, latest version with all the updates.

I have used opera for longer than I can remember. Recently it refused to upgrade from 102, so eventually I decided to uninstall and reinstall a clean version, having removed all traces from the computer (tasks, registry entries and directories). Using the offline installer the installation proceeds until opera starts to run when it displays a Page Crashed message and freezes. The installer tells me that the installation failed and offers to let me try again, to no avail.