Unable to download Fedora 12 beta using jigdo

[Hedayat Vatankhah]

Hi,
I'm trying to download F12 beta DVD x86_64 iso using jigdo (I've used 
jigdo to download previous versions too). It successfully downloaded all 
files, but it doesn't accept downloaded install.img file and tries to 
download it again and again. I've tried downloading install.img several 
times (also using stand alone download applications) but jigdo doesn't 
accept any of them. As a result, jigdo doesn't compose the final .iso 
image because of 1 missing file. Does anybody have any ideas about the 
reason of failure? Has anybody downloaded F12 beta x86_64 using jigdo 
successfully?

Thanks,
Hedayat