Problem with installing win 7 x64 via bootcamp!

Hi!

I have a macbook pro (late 2013), and I have a 64 bit only iso for win 7 ultimate, and bootcamp insist that I have a 32 bit. I had done this once before with no error, however, I deleted bootmgr thinking it was a junk file, and when I rebooted, bootmgr was 'missing'. So, I tried getting it from another computer and putting it on, but, it was ntfs so mac wouldn't write to it. So, I uninstalled it the hard way, and now, this! My iso is named X17-59465.iso. and according to many a site (including msfts), It is a 64 bit. Any addition info needed (next to credit card numbers) will be provided!