I don't remember exactly, but in r005.8.4, one of "Midline Process"/"From Scratch"/"Pheelone" demo does crash due to a "CRTC1 needed" message : my CRTC1 seems not detected as a true CRTC1... If's "From Scratch" that does display this message in fact.
Done in r005.8.12. Fram From Scratch (Vanity) and Still Rising (Vanity) demos unlocked in r005.8.12e.
[http://quasar.cpcscene.net/doku.php?id=coding:test_crtc Test CRTC - Quasar Net]