vm.py -- avoid obscure error... (hit when run out of disk space on host!)
vm.py -- avoid obscure error... (hit when run out of disk space on host!)

tscholl2/smc,tscholl2/smc,sagemathinc/smc,sagemathinc/smc,sagemathinc/smc,DrXyzzy/smc,DrXyzzy/smc,tscholl2/smc,DrXyzzy/smc,sagemathinc/smc,tscholl2/smc,tscholl2/smc,DrXyzzy/smc