I just updated my Chameleon from 2.1 r2069 to r2250 on my iAtkos ML installation.
After reboot I wasn't able to boot anymore and had to delete UseNvidiaROM=y and VBIOS=y from /Extra/org.chameleon.Boot.plist.
With UseNvidiaROM option it halts immediatly after the lines:
Looking for nvidia video bios file /Extra/10de_0614.rom
Read HFS+ file: [hd(0,2)/Extra/10de_0614.rom] 126464 bytes.
Without UseNvidiaROM I get a little bit further, but it stops after:
GeForceSensors (0): chipset: G92 (NV92) bios: 62.92.63.00
GeForceSensors (0): started
When I delete VBIOS option as well, I can boot normally.
But I do need these options to get my beamer (Sanyo Z800) running. No problems with r2069.
MSI P45 Neo3 MB
Intel Core2Duo E8400
NVIDIA GeForce 9800 GT