After I upgraded the system to Ubuntu 15.x, the data collection from the device is no longer working.
I think that it is not an issue with your software but with the usb link, however my knowledge of Linux is to limited to find the error.
attached some clipping from Syslog, where I disconnected and reconnected the usb cable, and then restarted the cm160 program, and they are no longer talking to each other.
(sorry no attachment, I can't upload a txt file, so... see below)
Worked perfectly under 14.x.

I would appreciate if you could put me on the right track to fix it.

Best regards,

Luc

Oct 23 19:34:44 workstation kernel: [22537.610588] usb 2-3: USB disconnect, device number 4
Oct 23 19:34:44 workstation kernel: [22537.610781] cp210x ttyUSB0: cp210x converter now disconnected from ttyUSB0
Oct 23 19:34:44 workstation kernel: [22537.610807] cp210x 2-3:1.0: device disconnected
Oct 23 19:34:44 workstation ModemManager[656]: (tty/ttyUSB0): released by modem /sys/devices/pci0000:00/0000:00:02.0/usb2/2-3
Oct 23 19:34:48 workstation kernel: [22541.771327] usb 2-3: new full-speed USB device number 5 using ohci-pci
Oct 23 19:34:48 workstation kernel: [22541.996613] usb 2-3: New USB device found, idVendor=0fde, idProduct=ca05
Oct 23 19:34:48 workstation kernel: [22541.996626] usb 2-3: New USB device strings: Mfr=1, Product=2, SerialNumber=3
Oct 23 19:34:48 workstation kernel: [22541.996634] usb 2-3: Product: OWL Wireless Electricity Monitor USB version is connected
Oct 23 19:34:48 workstation kernel: [22541.996639] usb 2-3: Manufacturer: Silicon Labs
Oct 23 19:34:48 workstation kernel: [22541.996644] usb 2-3: SerialNumber: 001FD7B0
Oct 23 19:34:48 workstation kernel: [22542.003934] cp210x 2-3:1.0: cp210x converter detected
Oct 23 19:34:48 workstation kernel: [22542.183989] usb 2-3: reset full-speed USB device number 5 using ohci-pci
Oct 23 19:34:48 workstation kernel: [22542.391669] usb 2-3: cp210x converter now attached to ttyUSB0
Oct 23 19:34:48 workstation mtp-probe: checking bus 2, device 5: "/sys/devices/pci0000:00/0000:00:02.0/usb2/2-3"
Oct 23 19:34:48 workstation mtp-probe: bus: 2, device: 5 was not an MTP device
Oct 23 19:34:49 workstation colord-sane: io/hpmud/pp.c 627: unable to read device-id ret=-1
Oct 23 19:34:50 workstation gnome-session[1702]: Wait for cm160 device to be connected
Oct 23 19:34:50 workstation gnome-session[1702]: Found compatible device #0: 0fde:ca05 (005)
Oct 23 19:34:50 workstation gnome-session[1702]: Found 1 compatible device
Oct 23 19:34:50 workstation gnome-session[1702]: usb_set_configuration returns -1 (could not set config 1: Operation not permitted)