George Miller, via email
Why won’t my Nikon D3, Pocket Wizard MiniTT1, FlexTT5 and SB-800 flashgun function together?
Matt says… We consulted Heather from Pocket Wizard for a solution to your problem, George. She says, “I think we have a simple solution. I assume all of your firmware is up to date? If not, here is a link to get that taken care of: http://wiki.pocketwizard.com/index.php?title=Getting_Started
When you’ve got a flash on the camera, you need to set it to master mode. The remote flashes will need to be set to TTL, as the master flash will control them via the TTL communications. The Nikon CLS Zones correspond to the A, B, and C Zones on your FlexTT5s. You will be able to use the remotes in either manual or TTL and adjust their power from the master flash. Here’s a link for details: http://wiki.pocketwizard.com/index.php?title=Advanced_Wireless_TTL