It is failing because of a bug in
https://github.com/isaacs/node-glob where it seems to be choking on
windows file paths: it doesn't return any files in the array when I
gave it the complete path to a valid file like C:\Documents and
Settings\airportyh\test\hello.js. We can submit a patch to glob, but
not knowing how long it'll take to get merged it, it might be easier
to just workaround it.
This seems to be fixed now, probably because of a fix in glob.