No GPU utilization

[tinman]

I am trying to run some md5 hashes through the gpus. The hashlist has about 9.5 million hashes and the wordlist from InsidePro has about 154 million words.
Windows 7-64bit 16GB ram, 2x ATI-5770

Option 1 using hashcat-gui:

C:\Users\XXXXX\Downloads\hashcat-gui-0.5.1\hashcat-gui-0.5.1\oclHashcat-plus>oclHashcat-plus64.exe --remove --outfile J:\Hashes\xabout.txt --gpu-devices 2 -m 0 J:\Hashes\xab J:\Wordlists\InsidePro\Master.txt

Status.......: Running
Input.Mode...: File (J:\Wordlists\InsidePro\Master.txt)
Hash.Type....: MD5
Time.Running.: 17 mins, 47 secs
Time.Left....: 4 hours, 26 mins
Time.Util....: 1067513.1ms/885.3ms Real/CPU, 0.1% idle
Speed........: 9305 c/s Real, 9207 c/s GPU
Recovered....: 73840/9532502 Digests, 0/1 Salts
Progress.....: 9981185/154045162 (6.48%)
Rejected.....: 48385/9981185 (0.48%)
HW.Monitor.#1: 0% GPU, 58c Temp
[s]tatus [p]ause [r]esume [q]uit =>


Option 2 using plain oclhashcat-plus:

C:\Users\XXXXX\Downloads\oclHashcat-plus-0.09>oclHashcat-plus64.exe --remove --outfile J:\Hashes\xabout.txt --gpu-devices 2 -m 0 J:\Hashes\xab J:\Wordlists\InsidePro\Master.txt

Access is denied.

Windows prompt error popup: oclHashcat-plus64.exe is not a valid Win32 application. Of course I tried the 32 bit version but it didn't have enough memory. The md5 hashlist is


For option 1, why is my gpu not getting used at all?
For option 2, how can I run the 64 bit cmd?