http://www.theinquirer.net/?article=16805
Once again, Yahoo has blocked Trillian users from connecting to their network.
What happens is this. I install Trillian Pro, restart, launch Trillian Pro, then an error appears that indicates that Trillian must be closed due to an error. No matter what I do, I can’t get past this error.
I had the same problem with the free version of Trillian but Trillian Pro works fine.