Windows install doesn't like my boot camp partition

Question

I am on a late 2013 MacBook pro, retina display, running yosemite. I am attempting to run windows 7 through boot camp. I followed all the instructions on apple support websites, using a USB drive and my downloaded ISO image of windows 7 professional. I partitioned it with 40 GB for windows, and boot camp restarted and launched into windows setup. After selecting language and which version of windows 7 I wanted, it asked which partition I wanted to install on. I selected the 4th partition, the one labeled boot camp. I formatted it, as in the instructions, and then when I hit next, this message appeared.
"Setup was unable to create a new system partition or locate an existing system partition. See the setup log files for more information."
Any help would be greatly appreciated, and apologies if I missed this solution in another thread or and missing something simple.

Answer 1

Hello, I have the same problem as OP and I seeing as he hasn't replied in some time, I'll go ahead and give you my results.
west-wireless-20-92:~ CodeSpartax$ sudo gpt -vv -r show /dev/disk0
gpt show: /dev/disk0: mediasize=500277790720; sectorsize=512; blocks=977105060
gpt show: /dev/disk0: PMBR at sector 0
gpt show: /dev/disk0: Pri GPT at sector 1
gpt show: /dev/disk0: Sec GPT at sector 977105059
      start       size  index  contents
          0          1         PMBR
          1          1         Pri GPT header
          2         32         Pri GPT table
         34          6        
         40     409600      1  GPT part - C12A7328-F81F-11D2-BA4B-00A0C93EC93B
     409640  975425848      2  GPT part - 53746F72-6167-11AA-AA11-00306543ECAC
  975835488    1269536      3  GPT part - 426F6F74-0000-11AA-AA11-00306543ECAC
  977105024          3        
  977105027         32         Sec GPT table
  977105059          1         Sec GPT header
and
west-wireless-20-92:~ CodeSpartax$ sudo fdisk /dev/disk0
Disk: /dev/disk0 geometry: 60821/255/63 [977105060 sectors]
Signature: 0xAA55
         Starting       Ending
#: id  cyl  hd sec -  cyl  hd sec [     start -       size]
1: EE 1023 254  63 - 1023 254  63 [         1 -  977105059] <Unknown ID>
2: 00    0   0   0 -    0   0   0 [         0 -          0] unused     
3: 00    0   0   0 -    0   0   0 [         0 -          0] unused     
4: 00    0   0   0 -    0   0   0 [         0 -          0] unused
Does this tell you anything? I'm needing to have a windows partition on my Mac for my CS classes, but I would very much prefer to not have to use Parallels.
Thanks for your time.