I have tried over and over to do this with the plugin manager and I can't get it to work. I check DotComplete, hit install, and it doesn't even look as though it is trying to install. I am running jEdit 4.1.3 with Java 1.4.2. I tried removing CodeAid to see if that was the problem and it would still not go. I had the same problem for another plugin and I tried just downloading and putting the jar file in my jars directory and that just caused jEdit to crash constantly.