Hi,
Your custom arduino IDE (v1.0.3) doesn't start for me. My regular arduino IDE (1.0.1) runs fine for uploading to normal arduino devices. For your version of the IDE, the startup Arduino logo is displayed, but it immediately exits, about 1/2 second later, with no explanation or log file. I'm using WIndows 7, 64 bit.
Thanks
Zak
Edit: Fixed grammar.