No reaction from the software

[sys6x]

Can someone tell me what's wrong with this please? I get no output, no work from oclHashcat-plus 0.5.1...I type it, press enter, then back at the shell.

oclHashcat-plus32.exe --hash-type 900 --attack-mode 3 --remove --custom-charset1 ?l?u?d?s --custom-charset2 ?l?d?s --outfile T:\crack\test.raw-md4.txt.2crk.out --outfile-format 2 --gpu-devices 1 T:\crack\test.raw-md4.txt.2crk ?1?2?2?2?2?2

Thanks