H.264 Pro Recorder - no picture with HDMI input, USB 2.0 out

Recently I bought the H.264 Pro Recorder which I'll need to have up and running for a big job in a week - but I can't get it to work - not registering any picture

I'm using HDMI out from my HD camera to the input on the device, using USB 2.0 out going in to my 2012 MacBook Pro 2.6 GHz Intel Core i7 with 16 GB RAM. I actually need it to run off my older MacBook Pro (for the purposes of a job I'm doing - need the newer mac to run a different encoder) and I'm not seeing any picture register there either (the older mac is a 2.2 GHz Intel Core 2 Duo with 4 GB RAM.

Any advice, help support would be much appreciated. Thought Blackmagic had Saturday support but there is none. Used the Blackmagic Media Express to test though the actual work will be done via Livestream Procaster. Neither recognizes an image even though the Pro Recorder is listed in both programs.

Please help?!

Producing video online since 1999.