WPA decrypt not working could be due to not having any valid data in the cap file, ie. you did not capture any handshakes (xterm window opens and closes quickly). Most of the libDb stuff will also work too fast to give you a chance to see what is happening on the xterm window, try importing some longish dictionary file (60k lines), or running batch option. Also check if the file pwddb is created under the dictionary list. Try running the following from the diction subdirectory under the FAS directory Code: sudo airolib-ng pwddb --stats .
sudo airolib-ng pwddb --stats