Fedora 15 Heimdall failure

[root@localhost CM7]# heimdall flash --factoryfs factoryfs.ext4 --cache cache.ext4 --dbdata dbdata.ext4 --kernel zImage  --verbose

Heimdall v1.2.0, Copyright (c) 2010-2011, Benjamin Dobell, Glass Echidna
http://www.glassechidna.com.au

This software is provided free of charge. Copying and redistribution is
encouraged.

If you appreciate this software and you would like to support future
development please consider donating:
http://www.glassechidna.com.au/donate/

      Manufacturer: "SAMSUNG"
           Product: "Gadget Serial"
         Serial No: "?"

            length: 18
      device class: 2
               S/N: 0
           VID:PID: 04E8:6601
         bcdDevice: 021B
   iMan:iProd:iSer: 1:2:0
          nb confs: 1

interface[0].altsetting[0]: num endpoints = 1
   Class.SubClass.Protocol: 02.02.01
       endpoint[0].address: 83
           max packet size: 0010
          polling interval: 09

interface[1].altsetting[0]: num endpoints = 2
   Class.SubClass.Protocol: 0A.00.00
       endpoint[0].address: 81
           max packet size: 0200
          polling interval: 00
       endpoint[1].address: 02
           max packet size: 0200
          polling interval: 00

Claiming interface...   Failed. Attempting to detach driver...
Claiming interface again...   Success
Setting up interface...   Success
Beginning session...
Handshaking with Loke...   Success

Downloading device's PIT file...
PIT file download sucessful

Uploading KERNEL
0%File Part #0... Response: 0  0  0  0  0  0  0  0
File Part #1... Response: 0  0  0  0  1  0  0  0
File Part #2... Response: 0  0  0  0  2  0  0  0
File Part #3... Response: 0  0  0  0  3  0  0  0
File Part #4... Response: 0  0  0  0  4  0  0  0
File Part #5... Response: 0  0  0  0  5  0  0  0
File Part #6... Response: 0  0  0  0  6  0  0  0
File Part #7... Response: 0  0  0  0  7  0  0  0
File Part #8... Response: 0  0  0  0  8  0  0  0
File Part #9... Response: 0  0  0  0  9  0  0  0
File Part #10... Response: 0  0  0  0  A  0  0  0
File Part #11... Response: 0  0  0  0  B  0  0  0
File Part #12... Response: 0  0  0  0  C  0  0  0
File Part #13... Response: 0  0  0  0  D  0  0  0
File Part #14... Response: 0  0  0  0  E  0  0  0
File Part #15... Response: 0  0  0  0  F  0  0  0
File Part #16... Response: 0  0  0  0  10  0  0  0
File Part #17... Response: 0  0  0  0  11  0  0  0
File Part #18... Response: 0  0  0  0  12  0  0  0
File Part #19... Response: 0  0  0  0  13  0  0  0
File Part #20... Response: 0  0  0  0  14  0  0  0
File Part #21... Response: 0  0  0  0  15  0  0  0
File Part #22... Response: 0  0  0  0  16  0  0  0
File Part #23... Response: 0  0  0  0  17  0  0  0
File Part #24... Response: 0  0  0  0  18  0  0  0
File Part #25... Response: 0  0  0  0  19  0  0  0
File Part #26... Response: 0  0  0  0  1A  0  0  0
File Part #27... Response: 0  0  0  0  1B  0  0  0
File Part #28... Response: 0  0  0  0  1C  0  0  0
File Part #29... Response: 0  0  0  0  1D  0  0  0
File Part #30... Response: 0  0  0  0  1E  0  0  0
File Part #31... Response: 0  0  0  0  1F  0  0  0
File Part #32... Response: 0  0  0  0  20  0  0  0
File Part #33... Response: 0  0  0  0  21  0  0  0
File Part #34... Response: 0  0  0  0  22  0  0  0
File Part #35... Response: 0  0  0  0  23  0  0  0
File Part #36... Response: 0  0  0  0  24  0  0  0
File Part #37... Response: 0  0  0  0  25  0  0  0
File Part #38... Response: 0  0  0  0  26  0  0  0
File Part #39... Response: 0  0  0  0  27  0  0  0

Failed to confirm end of file transfer sequence!
KERNEL upload failed!
Ending session...
Rebooting device...
Re-attaching kernel driver...