Mimosa stacktrace when doing "git rebase"

mimosa-git-rebase-stack.txt

/Users/semperos/opt/nvm/v0.8.7/lib/node_modules/mimosa/lib/util/file.coffee:82
            if (stats1.mtime > stats2.mtime) {
                      ^
TypeError: Cannot read property 'mtime' of undefined
    at FileUtils.isFirstFileNewer (/Users/semperos/opt/nvm/v0.8.7/lib/node_modules/mimosa/lib/util/file.coffee:82:23)
    at Object.oncomplete (fs.js:297:15)
npm ERR! package-name@0.0.1 start: `mimosa watch --server`
npm ERR! `sh "-c" "mimosa watch --server"` failed with 1
npm ERR! 
npm ERR! Failed at the package-name@0.0.1 start script.
npm ERR! This is most likely a problem with the package-name package,
npm ERR! not with npm itself.
npm ERR! Tell the author that this fails on your system:
npm ERR!     mimosa watch --server
npm ERR! You can get their info via:
npm ERR!     npm owner ls package-name
npm ERR! There is likely additional logging output above.

npm ERR! System Darwin 12.2.0
npm ERR! command "/Users/semperos/opt/nvm/v0.8.7/bin/node" "/Users/semperos/opt/nvm/v0.8.7/bin/npm" "start"
npm ERR! cwd /Users/semperos/dev/tradoc/TRADOC/projects/tbr-ui/src/main/tbr-ui
npm ERR! node -v v0.8.7
npm ERR! npm -v 1.1.49
npm ERR! code ELIFECYCLE
npm ERR! 
npm ERR! Additional logging details can be found in:
npm ERR!     /Users/semperos/dev/tradoc/TRADOC/projects/tbr-ui/src/main/tbr-ui/npm-debug.log
npm ERR! not ok code 0