I have just started on the test wpa.cap file for testing ;
Sofar running for a few minutes without any problems..Code:./crunch 8 8 -t @@@@@@@@ -u | aircrack-ng -e test -w - /pentest/wireless/aircrack-ng/test/wpa.cap
Try with the -u option, but doubt that will make any difference as you advise it is starting OK.
For further info ;
Creating wordlists with crunch v3.0