listen port unknown

i have a question which i have reaserched all faqs on your site plus over the net without an answer.

i am using bitcomet 1.09 version ( i have been using bit comet for years so not new at this) i was using bit comet for longest time had the portforwarding all setup both lights green everything aok but then one day the listen port went grey. now my dht port is still green but listen port is not, I have been doing a semi light reaserch on this for about 2 months on and off without an answer, wondering if anyone can tell me what i can do to get the listen port back to green.. ty in advance

Have you checked this topic, as well?