sorry for my newby question but i have read every post without luck..
I have made a .txt file containing the WPA code of my router, and stored at /home/user/.cleven/dictionaries.
As you say :

When the WPA security type is chosen then also a button for selecting a dictionary appears.

Pressing this button a dialog appears that shows the dictionaries stored in
/home/user/.cleven/dictionaries
and allows the selection of the dictionary to be used for the decryption.

so when the dialog appears that shows the dictionaries i choose my dictionary but then it doesnt let me to press decrypt..
(it only let me choose one of the .cap files)
thanks in advance for your reply