Cubase 12 crashes using Sampler

Cubase 12 crashes when I right click an .rex file and then “Create Sampler Track”. No error is displayed at the crash, just on next run " The application was terminated unexpectedly". Cubase 11.5 was fine before that.

Win11 fresh installed, 12900k, 32GB Ram, 1080ti. All drivers and bios are updated to the latest. Focusrite 4i4 3rd Gen.