On February 16, 2012, Developer Preview 1 (DP1) of Mountain Lion was released, but Chameleon could not boot this latest revision of OS X. .: ErmaC :. was on top of the issue, and released a new version of the boot file the same day. Now there is a real patchfor this (thanks to cparm and .: ErmaC :.), and has been used in several Chameleon branches already; the official Chameleon trunk does not yet have this patch.