Yep, it looks like a bug. You can set it up to and including 4095 MB succesfully, beyond that it will not work. I’ve already corrected this for future builds.
I cannot really say for certain when the next build will be released; however, unless there are show-stopping issues that need urgent attention, we plan for a second service pack around sping-time next year fixing any small issues that may have remained (like the one above), and maybe adding a thing or two. Beyond that any major new features will be included in version 2.
As always, if you have a problem that can be corrected only with a new build, you can email me at vlado@chaosgroup.com
i’ve got mine set to 6000mb, static and its working fine. But thats by default and i havnt worked on a scene that uses more than 2gb ram as yet anyway, since the new version.