I just upgraded i1Profiler to 1.4.2 and tried to create a new display profile. Something in this version must have changed, as I can no longer get a reading of 100 cd/m^3 off my display. My Contrast and overall RGB levels are the same as the last time I calibrated (with version 1.2.0 - yes I haven't upgraded in a while!), and with that previous version i1Profiler read 100 cd/m^3 right on the mark. Not sure what's going on.
I also don't like the new feedback display for the RGB sliders. Makes it very hard to zero in on the right settings.
So why don't you use v 1.2.0 for monitors and v1.4.2 for anything else, I haven't noticed any noticeable profile quality improvement over this upgrade it seems it was only on the interface of UI.