But I am still getting stamp-propagation failures on Windows with mlisp after having run mlisp8 (and I think it would also fail if running mlisp8 after mlisp). I will send the console output from that separately.

 I suspect this is indeed an issue with files left over after the run of mlisp polluting the mlisp8 run. I'll confirm that by clearing build/ before each run and see if the failures still occur.