Greg - it might be a "thing" with the D800E - like most Nikon cameras of late, they seem a little difficult to develop third party trigger applications for. Have a look at the DSLRremote compatability page:
http://www.ononesoftware.com/product...ote/specs.html
For the D800E, you can see that DSLRremote can't control either live view or bulb modes. I suspect that the Nikon SDK's restrictions are to blame for that. Funnily-enough, the straight D800 will run in remote live view. Go figure.
Given this, my guess is that other apps and devices might have similar restrictions placed on them by Nikon's SDK.