X100s and PocketWizard TT1 / TT5's
Did you follow these steps exactly? Haven't had a chance to try it, but Pocketwizard support suggested this:
If you use the Mini TT1 in the Basic Trigger mode on the Fuji camera it will work. Basic Trigger is found under the Misc tab in the PW Utility. The flashes have to be in Manual mode and the Flex has to be set to Standard Receive. The Flex receiver needs to be set to receive a "Standard PocketWizard Channel". Launch the "PocketWizard Utility" and deselect the box that says "Use Control TL Channel for Rx". Select your channel from where it says "Standard RX Channel " Now click the "Apply Changes" box to complete the process.