Trillian 220.127.116.11 has been released in response to some issues with Yahoo Offline messages and a problem with the MSN plugin. Both errors could crash Trillian.
The problems started to show up a few days ago. After analyzing crash dumps sent in from various users, the developers fixed both, the Yahoo and the MSN plugin. Existing users will receive the update automatically. The new 18.104.22.168 release contains the updated plugin versions. No new features have been added.