Hi, I updated my test server today and everything seemed fine. I added a new library item via a URL. After that my history panel displays "Internal Server Error" and I am getting the error below in paster.log: Any ideas how this has occurred and if there is a fix? Shaun ---------------------------------------- Exception happened during processing of request from ('2.218.9.31', 63227) Traceback (most recent call last): File "/storage/home/galaxy/test/galaxy-dist/eggs/Paste-1.6-py2.6.egg/paste/httpserver.py", line 1053, in process_request_in_thread self.finish_request(request, client_address) File "/usr/lib/python2.6/SocketServer.py", line 320, in finish_request self.RequestHandlerClass(request, client_address, self) File "/usr/lib/python2.6/SocketServer.py", line 615, in __init__ self.handle() File "/storage/home/galaxy/test/galaxy-dist/eggs/Paste-1.6-py2.6.egg/paste/httpserver.py", line 432, in handle BaseHTTPRequestHandler.handle(self) File "/usr/lib/python2.6/BaseHTTPServer.py", line 329, in handle self.handle_one_request() File "/storage/home/galaxy/test/galaxy-dist/eggs/Paste-1.6-py2.6.egg/paste/httpserver.py", line 427, in handle_one_request self.wsgi_execute() File "/storage/home/galaxy/test/galaxy-dist/eggs/Paste-1.6-py2.6.egg/paste/httpserver.py", line 290, in wsgi_execute self.wsgi_write_chunk(chunk) File "/storage/home/galaxy/test/galaxy-dist/eggs/Paste-1.6-py2.6.egg/paste/httpserver.py", line 125, in wsgi_write_chunk "Content returned before start_response called") RuntimeError: Content returned before start_response called -- The University of Edinburgh is a charitable body, registered in Scotland, with registration number SC005336.