Sounds like you're trying to start up a second transmission session on the same port as the first. If this is the case, just specify a different port for each session and you'll be fine.
-- Port Forwarding Error: port 51413 in use https://bugs.launchpad.net/bugs/335392 You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs