I've found that "Premature end of script headers: tg_fastcgi.fcgi" usually indicates a code or environment error. Here are few questions for you:
1) What types of changes did you make? 2) Did you add anything that is not compatible with the version of TG that you installed on Dreamhost? You might want to try killing all of the fastcgi processes on the server and then reload the app. In general, it is better to kill all those process when making changes because it may take a while for them to refresh (see the Troubleshooting section of the Dreamhost instructions http://trac.turbogears.org/turbogears/wiki/TurboGearsOnDreamHost if you need more details about this). Sean
