<p>Enterprise Architect has a way to generate the documentation in HTML/RTF/etc. that you could publish, but you have to use its GUI to do that manually. When you have your *.eap files in a CVS/Subversion server, it would be useful to have a script that would check out daily the latest version and publish it in a web server. As long as I know, EA doesn't have a command line utility for this purpose. I found that you can automate almost anything using its COM interface, but that means it's necessary to write a small program to do that. Any ideas about the easiest/cleanest way to do that (without having to write code, if possible)?</p>

I think that you might run into concurrency and contention problems no matter what configuration you use as long as you are attempting to have two different processes log to the same file.
You should look into sending log events from both processes to a third, centralized location - take a look at
RemotingAppender
in log4net, I assume log4cxx has something similar.