Problem with dfu-util (flashing)

[Live session user]

Ok, I fixed the previous error by passing --device vendor:product, but 
now I get a segmentation fault:

    ubuntu at ubuntu:~/Desktop$ sudo '/home/ubuntu/Desktop/dfu-util' -a
    kernel -d 0x1d50:0x5119 -i 2 -R -D
    /home/ubuntu/Desktop/uImage-2.6.29-oe11+gitr119844+a3587e4ed77974adfb057af261aaeea4022018e8-r3.5-om-gta02.bin
    dfu-util - (C) 2007 by OpenMoko Inc.
    This program is Free Software and has ABSOLUTELY NO WARRANTY

    Opening USB Device 0x1d50:0x5119...
    Claiming USB DFU Runtime Interface...
    Determining device status: state = appIDLE, status = 0
    Device really in Runtime Mode, send DFU detach request...
    Resetting USB...
    Opening USB Device...
    Segmentation fault (core dumped)

On the Neo it says (the first try):

    DFU: Switching to DFU Mode
    DEVICE_CONFIGURED: 1

After that if I try the command again the segfault occurs sooner:

    dfu-util - (C) 2007 by OpenMoko Inc.
    This program is Free Software and has ABSOLUTELY NO WARRANTY

    Opening USB Device 0x1d50:0x5119...
    Segmentation fault (core dumped)


Any suggestions to what could cause this error?