CHIRP

trying to read from my FT-2900 using a rtsystem usb-29f on ubuntu

(process:4150): Gtk-WARNING **: Locale not supported by C library.
Using the fallback 'C' locale.
ERROR: -- Exception: --
ERROR: Traceback (most recent call last):
File "/usr/lib/python2.7/dist-packages/chirp/ui/clone.py", line 249, in run
self.__radio.sync_in()
File "/usr/lib/python2.7/dist-packages/chirp/drivers/ft2900.py", line 541, in sync_in
raise errors.RadioError("Failed to communicate with radio: %s" % e)
RadioError: Failed to communicate with radio: Failed to read header

ERROR: ----------------
ERROR: Clone failed: Failed to communicate with radio: Failed to read header
ERROR: --- Exception Dialog: Failed to communicate with radio: Failed to read header ---
ERROR: None

ERROR: ----------------------------

LUSB shows
Bus 003 Device 001: ID 1d6b:0002 Linux Foundation 2.0 root hub
Bus 006 Device 001: ID 1d6b:0001 Linux Foundation 1.1 root hub
Bus 002 Device 002: ID 10f1:1a43 Importek
Bus 002 Device 001: ID 1d6b:0002 Linux Foundation 2.0 root hub
Bus 005 Device 001: ID 1d6b:0001 Linux Foundation 1.1 root hub
Bus 001 Device 002: ID 0bda:0129 Realtek Semiconductor Corp. RTS5129 Card Reader Controller
Bus 001 Device 001: ID 1d6b:0002 Linux Foundation 2.0 root hub
Bus 004 Device 001: ID 1d6b:0001 Linux Foundation 1.1 root hub
and my 99-custom udev file is as follow
RT Systems cable for Yaesu VX-8DR
SYSFS{idVendor}=="2100", SYSFS{idProduct}=="9e50", RUN+="/sbin/modprobe -q ftdi_sio vendor=0x2100 product=0x9e50"

am sure am doing something wrong, just not sure what