openmediavault-vdr 0.5.6 device not detected

New to OMV so apologies if I'm missing something obvious.
Im running OMV 0.548 and have installed the openmediavaul-vdr 0.5.6 package from omv-extras.
I've attached my UK DVB-T2 USB device - PCTV 290, but on clicking "Check for connected devices" a get the message "Number of connected devices:0"
Is there anything I need to do to enable it?
Running dmesg from a shel suggests that it being detected by OMV -

[ 8140.319018] usbcore: registered new interface driver usbhid
[ 8140.319019] usbhid: v2.6:USB HID core driver
[ 8158.000363] usb 1-1.2.2.2: new high speed USB device using ehci_hcd and address 14
[ 8158.093001] usb 1-1.2.2.2: New USB device found, idVendor=2013, idProduct=024f
[ 8158.093005] usb 1-1.2.2.2: New USB device strings: Mfr=1, Product=2, SerialNumber=3
[ 8158.093008] usb 1-1.2.2.2: Product: PCTV 290e
[ 8158.093010] usb 1-1.2.2.2: Manufacturer: PCTV Systems
[ 8158.093012] usb 1-1.2.2.2: SerialNumber: 00000010PL97
[ 8158.093102] usb 1-1.2.2.2: configuration #1 chosen from 1 choice

Any ideas?

Thanks for the reply David,

from http://www.linuxtv.org/wiki/in…Systems_nanoStick_T2_290e

"This is a DVB-T2 and DVB-C USB device by PCTV Systems.

It has experimental support since May 2011 in the media tree Git repository for v2.6.40. It is supported in kernel 3.0 and later."

If I install the backports kernel, is there a risk of breaking my other plugins?

Thanks WastlJ.
I'll take a backup of my OMV partition and try the backports kernel.

Found it!
Installing the new kernel seems to have done the trick. Device now detected and am now scanning for channels.

Thanks David and WastIJ,