[U2Lynne]

I googled the error and got this:

Basically, the client you are using is trying to enable the correct ports for BT traffic and it's having problems.

Most of the time, it's the router. You probably have a Dlink,Linksys, etc box attached betwen your Internet connection and your computer. If yes,
1. Grab your user manual.
2. Log into your router per the manual.
3. Find the uPnP selection and enable it.
-> Note, some older routers requires you to upgrade the firmware.
4. If this doesn't help, go to http://portforwarding.com for model specific forwarding.

If you cannot enable uPnP, you need to manually forward the ports 6991-6999 to your local system IP.