http://www.mirandabanda.org/files/Cog/VM/VM.r2678 CogVM binaries as per VMMaker.oscog-eem.264/r2678. Fix snapshot primitive failure in the StackVM and Cogit. The primitive should fail, not merely return the receiver. Also if in Cogit, need to back-up instruction pointer on failure. Make reportMinimumUnusedHeadroom more informative (also print available headroom). -- best, Eliot