Thanks Saturn, after following steps you've described, everything works fine.

Little suggestion - what about calling reaver with -a and -s also specified? Or, even better, settings option (that doesn't force users to use it - just giving possibility ) to specify own commands for reaver?

I know, that Cleven tries to be as simple and config-less as possible, but wps cracking - at this point - is quite specific thing, that needs fine tuning of parameters to be usable at all (probably, mainly due to mess in WPS implementations amongst APs). This may change in future, but for now, specifying custom commands seems essential. And, having it as custom settings field, one can still benefit from Cleven "one button press" philosophy, instead of writing it by hand every time, or scrolling via ash_history.

/Estel