Thanks all for your replies. This is my second attempt at setting up a stable version (first was partial STEP using NMM) and I was able to successfully clean all esm's then. I was kinda suprised when the save option did not appear on exiting TES5Edit. Yup, still no worky I think so, I am following through to "Undelete and Disable References". I will post my File Paths this afternoon and do some more troubleshooting. Thanks again!