From: oshea on
It works fine for Webpack 10.1 but does not work for Chipscope. I get
the following error on chipscope:

COMMAND: open_platform_usb_cable FREQUENCY=6000000 PORT=USB21
INFO: Started ChipScope host (localhost:50001)
INFO: Opened socket connection: localhost 50001 localhost/127.0.0.1
INFO: Reusing A0020001 key.
INFO: Reusing 24020001 key.
INFO: OS platform = i686.
INFO: Connecting to cable (Usb Port - USB21).
INFO: Checking cable driver.
INFO: File version of /opt/Xilinx/10.1/ChipScope/bin/lin/../../xilinx/
bin/lin/xusbdfwu.hex = 1030.
INFO: File version of /usr/share/xusbdfwu.hex = 1030.
INFO: libusb-driver.so version: 2008-03-29 09:08:41.
INFO: Cable connection failed.
ERROR: Failed to open Xilinx Platform USB Cable. See message(s) above.

I am running Ubuntu GG with a Spartan 3e FPGA. Any suggestions would
be appreciated