Hashcat exhausted, yet password is in dictionary

(Testing my own router, that's how I know password is in the dictionary ...)

I'm using airodump-ng to get the capfiles and using aircrack (or hashcat's online tool) to convert to hccap.

Pyrit, cowpatty, and others all tell me the .cap is fine. Yet, it really isn't... 

Can someone tell me exactly how to check the .cap for what the problem might be?