help please hashcat-gui v-0.5.1 and hashcat-plus v-0.9
good day sir/madam

a couple of day ago im learning how to use backtrack 5v3 yesterday i watch this tutorial in you tube here the link:
i follow the tutorial and i downloaded the requirements.
1. hashcat-gui v-0.5.1
2. hashcat-plus v-0.9
3. the dictionary [rockyou.txt]
4. wpa handshakes using bakctrack 5 r3 and converted to hhcap
5. laptop specs:
Acer 4755g i5 Intel Core i5-2450M
Mobile Intel® HM65 Express Chipset
4GB DDRIII NVIDIA® GeForce® GT 540M with NVIDIA® Optimus™ technology (2048MB of dedicated DDR3 VRAM),
Window 7 64bit home premium

i also install microsoft visual c++ x64 redistributable

my problem was when i click the start button the hashcat wont run.
can anyone help me with my problem thanks in advance.

oclhashcat is native in Backtrack. You just need to run it :
Quote:[bt@ ~]# cd /pentest/passwords/oclhashcat

./cudahashcat -m 2500 wpa_file.hccap dict.dic

be sure you have the latest driver installed, to check the driver version :
Quote:[bt@ ~]# cat /proc/driver/nvidia/version

IF you use windows to crack your wpa handshake, please paste the cmd line you use.