[galaxy-user] how to turn on debug?

I received a server error and would like to more detailed information Server Error An error occurred. See the error logs for more information. (Turn debug on to display exception reports here) How do I 'turn debug on'?. I am using the public galaxy instance http://main.g2.bx.psu.edu/ Thanks, Peter Andrews -- -------------- Peter Andrews Programmer Computational Genetics Lab Dartmouth Hitchcock Medical Center (603) 653-9963