I seem to recall I had an issue getting them both to work in labview, which is why I wrote a script for it to run off the Arduino and collect data on an SD card. Did you look at my thread? http://www.rollitup.org/t/lets-make-a-lux-meter-bh1750-arduino-labview2013-erection.824186/page-2#post-11452837
http://www.rollitup.org/t/lets-make-a-lux-meter-bh1750-arduino-labview2013-erection.824186/page-2#post-11452837