LR4.4 won't tether to my Canon 50D or 7D; Win7 64 bit

Hey all,
I had LR3.6, never tried to tether. I upgraded and now have LR4.4. I tried tethering my 50D and my 7D, LR wont recognize either camera at all. EOS Utility works fine. Same cameras, same cables work on a fresh LR 4.4 install on my wife's laptop perfectly (never had EOS utilites or LR installed previously).
Both PCs, running win7 64-bit.
I uninstalled LR3 and EOS utilities off the problem PC then restarted, but still no go. Windows recognizes both cameras on any USB port with any cable, so I have eliminated those variables. I am at a loss at this point, other than re-installing LR4. Hoping I dont have to do that and rework several thousand images...
any ideas?
Thanks,
Paul

Paul
Some comfort but no solution just a workaround. Use EOS utility and Autoimport to get your images into LR. EOS utility gives you more control of camera settings than LR as well as live view which I prefer.
Tethered shooting on 7D works fine on this PC W7 64bit (both in LR3.x and 4.4). I vaguely remember some difficulty in the sequence a while back - I switch on the camera last and wait after everything else is set and connected.
You will not have to rework any photographs if you end up re-installing Lightroom. Just open your saved catalogue - note where it is first. The old catalogue should be suggested on any reinstall.
Can you resintall/update the Canon EOS driver as an early and simple step?

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Message was edited by: i.3d

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Message was edited by: i.3d
Message was edited by: i.3d

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