9pserve: announce unix!/tmp/ns.hherman.:0/acme: No such file or directory

I'm trying to work out why this is happening, but in the mean time I thought you might also like to know about it. I've deleted a few of the plan9 binaries from my machine that were colliding with programs I use normally (e.g zip or tar), so possibly I've deleted something important. If this rings any bells, pointers would be much appreciated!