Here is a link to a new aim.dll. This is ONLY for Trillian 3.1.
http://obscurity.ceruleanstudios.com/~dap/aim.dll
Download the file and close Trillian. Replace the aim.dll in the C:\Program Files\Trillian\plugins folder and then start Trillian.
Try it out and see if it works, then post here with your results.
If anyone has been trying to talk to me in the past days try again today.