NEC SpectraView and M.Lion
There is a known bug with SVII not functioning when upgrading to ML. This has been documented in several places, including on NEC SpectraView's web page. This - I believe - is limited to MAC users and (I think) with certain NVIDIA video cards. I have a Mac Pro with a GeForce BT 120 with OS X 10.6.8 and a NEC 2490WIXi - all of which function without a problem - and I have been advised to wait a few more weeks if I want to be able to continue calibrating my monitor. You are one of the lucky ones !! NEC sez that Apple is responsible for providing the new patch.