I have an OLDER Galaxy install I was going to fade out. In meantime I saw that its debug flag should be turned off, so I did. But when it restarted it complained in the history tab with a server error. I put debug back into config and it runs fine. I haven't changed anything recently on it. Wondering if there is a simple remedy? Details below. Thanks, Damion ********************************************************* Server Error An error occurred. See the error logs for more information. (Turn debug on to display exception reports here) And indeed, after the startup log message... serving on http://127.0.0.1:8080 There is an error that seems to be triggered when A GET /galaxy/history command is sent. ................ - - [15/Apr/2015:13:03:43 -0700] "GET /galaxy/history HTTP/1.1" 200 - "http://salk.bccdc.med.ubc.ca/galaxy/" "Mozilla/5.0 (X11; Linux x86_64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/41.0.2272.101 Safari/537.36" ................ - - [15/Apr/2015:13:03:43 -0700] "GET /galaxy/history HTTP/1.1" 500 - "http://salk.bccdc.med.ubc.ca/galaxy/" "Mozilla/5.0 (X11; Linux x86_64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/41.0.2272.101 Safari/537.36" Error - <type 'exceptions.TypeError'>: 'NoneType' object is not callable ................ - - [15/Apr/2015:13:03:43 -0700] "GET /galaxy/root/tool_menu HTTP/1.1" 200 - "http://salk.bccdc.med.ubc.ca/galaxy/" "Mozilla/5.0 (X11; Linux x86_64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/41.0.2272.101 Safari/537.36" URL: http://salk.bccdc.med.ubc.ca/galaxy/history File '/usr/lib/python2.6/site-packages/paste/exceptions/errormiddleware.py', line 144 in __call__ app_iter = self.application(environ, sr_checker) File '/usr/lib/python2.6/site-packages/paste/recursive.py', line 80 in __call__ return self.application(environ, start_response) File '/usr/lib/python2.6/site-packages/paste/httpexceptions.py', line 633 in __call__ return self.application(environ, start_response) File '/usr/local/galaxy/production/galaxy-dist/lib/galaxy/web/framework/base.py', line 169 in __call__ return body( environ, start_response ) File '/usr/local/galaxy/production/galaxy-dist/lib/galaxy/web/framework/__init__.py', line 759 in render template.render_context( context ) File '/usr/local/galaxy/production/galaxy-dist/eggs/Mako-0.4.1-py2.6.egg/mako/template.py', line 319 in render_context **kwargs) File '/usr/local/galaxy/production/galaxy-dist/eggs/Mako-0.4.1-py2.6.egg/mako/runtime.py', line 692 in _render_context _exec_template(inherit, lclcontext, args=args, kwargs=kwargs) File '/usr/local/galaxy/production/galaxy-dist/eggs/Mako-0.4.1-py2.6.egg/mako/runtime.py', line 718 in _exec_template callable_(context, *args, **kwargs) File '/usr/local/galaxy/production/galaxy-dist/database/compiled_templates/root/history.mako.py', line 61 in render_body __M_writer(u'\n\n') File '/usr/local/galaxy/production/galaxy-dist/lib/galaxy/web/framework/__init__.py', line 756 in write response_write( d.encode( 'utf-8' ) ) TypeError: 'NoneType' object is not callable Hsiao lab, BC Public Health Microbiology & Reference Laboratory, BC Centre for Disease Control 655 West 12th Avenue, Vancouver, British Columbia, V5Z 4R4 Canada