I find tethered capture in Lightroom 4.3 to be problematic. I never know if it's going to work correctly. Sometimes it does and sometimes in doesn't. Sometimes it starts out working correctly and it stops in mid shoot. Often, the incoming images fail to advance in loupe view automatically. I find that I have to start tethered capture in a very specific sequence in order to make it work. First, I have to launch Lightroom. Then start tethered capture. Then turn on my camera, and finally plug it into my computer. If I don't do it EXACTLY like that, I have problems. In my opinion, Adobe engineers need to work on making tethered capture more robust. It should just work- no matter what order things are turned on and/or plugged in.