Running ./CameraControlUI error

[BigGordon]

What I have done:
(1) Successfully compile and run surround360_render. Step 2 and step 3 with Sample Data "Palace of Fine Arts Take 1" work successfully.
(2) Successfully compile surround360_camera_ctl_ui.
(3) All hardware and wire were assembled. The Ubuntu 16.04 system can recognize the RAID. But the Flycap software can not recognize the cameras.

What goes wrong:
(1) 17 cameras were recognized by Flycap when the fist time assembling the Fiber Box. But now they never appear.
(2) Flycap can recognize the camera when connected to the computer directly through usb. But after several minutes doing nothing, they disconnect.
(3) At the moment when Flycap shows a camera connect to the computer, run ./CameraControlUI. An error happens. Picture bellow shows the error and the gdb error stack log.