Got an ugly error that didn't give me much info at all.
Cannot convert undefined or null to object.
After alot of head ache i started checking each npm package one by one with the tool
npm-check. So useful. In the interactive mode i could just install each missing package since i had tried removing npm-modules folder.
somehow the package install of gulp-modulizr was not getting a package back it seems it should be spelled modulizr-gulp. i tried removing it and now it works.
normal install of win node doesn't seem to work ok with nvm either so...