my Canon 7d will not tether

hello,

I have a canon 7d and a rebel T5i. I have been trying to tether them in light room but it simply states no camera detected.

the Canon auto import and eos utility 2 pop up when the camera is connected so I know it is not the usb cable. my camera won't operate and simply sates busy the window with the light for the CF card constantly going.

I have tethered cameras before without issue. I am unsure where the issue is...the camera or lightroom.

i tried it with both JPG and Raw settings

I amusing Lightroom 5 and a MacBook pro with OS Sierra.

thank you for your time

David