hashcat-gui v0.5.1 - not work perfectly

[macgyver]

Hello!

My basic system:
- asrock e350M1 usb 3.0
- msi R5850 Twin Frozr II (radeon HD5850)
- 4GB ddr3 - no pagefile
- windows 7 x64 SP1 - without updates
- amd catalyst 12.3 x64
- chieftech 500W psu

(Sorry my bad english!)

I capture backtrack 5 R2 - .cap file. I checkd, handshake is good. I use the online converter for hashcat:

http://hashcat.net/cap2hccap/

make for me the .hccap file.
I run the GUI x64 -> oclHashcat-plus
open the .hccap file
mode: bruteforce
hash type: WPA/WPA2
mask: ?l?u?d
output: uncheckd the "Write recovered..." box

Right the "start" button is:

oclHashcat-plus64.exe --hash-type 2500 --attack-mode 3 c:\Users\maygyver\Desktop\test.hccap ?l?u?d

I push the start, the cmd window is coming up:

oclHashcat-plus ...... by atom starting...
Hashes: 1
Unique salts: 1
Unique digestes: 1
...
Platform: AMD compatible platform found
Device #1: cípress, 1.024MB, 0MHz, 18MCU
....

Status: exhausted
Input mode: mask (?l?d?u)
hash target: macgyver
hash type: wpa/wpa2
time runing: 1 sec
time left: 0 sec
...
speed: 0 c/s
recovered: 0/1 digitests, 0/1 salts
...
started: ...... 17:52
stopper: ...... 17:52

...and the run stopped.
Trivial problem, or stronger?
What mess up?

I don't understand what is the problem.

Can you help me?
Sorry the new topic, but I don't know who can I give up this question!

Thanks in advance!