Hi all, I encounter the same error that was already mentioned in this list (with the same email title). For me it also does only happen when debug is set to false. However I could not find a solution to it in the archive of the mailing list. I tried it with both galaxy-dist and galaxy-central, newest version. The error is as follows: 10.1.5.190 - - [10/Mar/2011:11:41:20 +0200] "GET /history HTTP/1.1" 500 - "http://solweb2/" "Mozilla/5.0 (X11; U; Linux x86_64; en-US; rv:1.9.2.14) Gecko/20110301 Fedora/3.6.14-1.fc14 Firefox/3.6.14" Error - <type 'exceptions.TypeError'>: 'NoneType' object is not callable URL: http://solweb2/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 '/galaxy/galaxy_server/lib/galaxy/web/framework/base.py', line 154 in __call__ return body( environ, start_response ) File '/galaxy/galaxy_server/lib/galaxy/web/framework/__init__.py', line 676 in render template.render_context( context ) File '/galaxy/galaxy_server/eggs/Mako-0.2.5-py2.6.egg/mako/template.py', line 146 in render_context runtime._render_context(self, self.callable_, context, *args, **kwargs) File '/galaxy/galaxy_server/eggs/Mako-0.2.5-py2.6.egg/mako/runtime.py', line 381 in _render_context _exec_template(inherit, lclcontext, args=args, kwargs=kwargs) File '/galaxy/galaxy_server/eggs/Mako-0.2.5-py2.6.egg/mako/runtime.py', line 414 in _exec_template callable_(context, *args, **kwargs) File '/galaxy/galaxy_server/database/compiled_templates/root/history.mako.py', line 55 in render_body __M_writer(u'\n<!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN" "http://www.w3.org/TR/html4/loose.dtd">\n\n<html>\n\n<head>\n<title>') File '/galaxy/galaxy_server/lib/galaxy/web/framework/__init__.py', line 673 in write response_write( d.encode( 'utf-8' ) ) TypeError: 'NoneType' object is not callable CGI Variables ------------- CONTENT_LENGTH: '0' HTTP_ACCEPT: 'text/html,application/xhtml+xml,application/xml;q=0.9,*/*;q=0.8' HTTP_ACCEPT_CHARSET: 'ISO-8859-1,utf-8;q=0.7,*;q=0.7' HTTP_ACCEPT_ENCODING: 'gzip,deflate' HTTP_ACCEPT_LANGUAGE: 'en-us,en;q=0.5' HTTP_CONNECTION: 'Keep-Alive' HTTP_COOKIE: 'galaxysession=f611411aa8a0c665eb9e71b6b35ec98d69a19a7826eff47d201855aea491539e3c45f483349e57b4' HTTP_HOST: 'solweb2' HTTP_REFERER: 'http://solweb2/' HTTP_USER_AGENT: 'Mozilla/5.0 (X11; U; Linux x86_64; en-US; rv:1.9.2.14) Gecko/20110301 Fedora/3.6.14-1.fc14 Firefox/3.6.14' HTTP_X_FORWARDED_FOR: '10.1.5.190' HTTP_X_FORWARDED_HOST: 'solweb2' HTTP_X_FORWARDED_SERVER: 'solweb2' ORGINAL_HTTP_HOST: 'localhost:8080' ORGINAL_REMOTE_ADDR: '127.0.0.1' PATH_INFO: '/history' REMOTE_ADDR: '10.1.5.190' REQUEST_METHOD: 'GET' SERVER_NAME: '0.0.0.0' SERVER_PORT: '8080' SERVER_PROTOCOL: 'HTTP/1.1' Configuration ------------- __file__: '/galaxy/galaxy_server/universe_wsgi.ini' admin_users: 'diehl@immunbio.mpg.de,lims_mq@solweb1.immunbio.mpg.de' allow_library_path_paste: 'True' allow_user_creation: 'True' allow_user_deletion: 'False' cookie_path: '/' database_connection: 'postgres://galaxy:galaxy@localhost/galaxy' database_engine_option_server_side_cursors: 'True' database_engine_option_strategy: 'threadlocal' datatypes_config_file: 'datatypes_conf.xml' debug: 'False' enable_api: 'True' enable_sequencer_communication: 'True' file_path: 'database/files' gbrowse_display_sites: 'wormbase,tair,modencode_worm,modencode_fly' genetrack_display_sites: 'main,test' here: '/galaxy/galaxy_server' id_secret: 'MPI IMMUNBIOLOGIE' library_import_dir: '/galaxy/galaxy_server/data' log_actions: 'True' log_events: 'True' log_level: 'DEBUG' new_file_path: 'database/tmp' new_user_dataset_access_role_default_private: 'True' require_login: 'False' static_cache_time: '360' static_dir: '/galaxy/galaxy_server/static/' static_enabled: 'True' static_favicon_dir: '/galaxy/galaxy_server/static/favicon.ico' static_images_dir: '/galaxy/galaxy_server/static/images' static_scripts_dir: '/galaxy/galaxy_server/static/scripts/' static_style_dir: '/galaxy/galaxy_server/static/june_2007_style/blue' tool_config_file: 'tool_conf.xml' tool_data_path: 'tool-data' tool_path: 'tools' ucsc_display_sites: 'main,test,archaea,ucla' use_interactive: 'False' use_lint: 'False' use_profile: 'False' WSGI Variables -------------- application: <paste.recursive.RecursiveMiddleware object at 0x63ab690> paste.cookies: (<SimpleCookie: galaxysession='f611411aa8a0c665eb9e71b6b35ec98d69a19a7826eff47d201855aea491539e3c45f483349e57b4'>, 'galaxysession=f611411aa8a0c665eb9e71b6b35ec98d69a19a7826eff47d201855aea491539e3c45f483349e57b4') paste.expected_exceptions: [<class 'paste.httpexceptions.HTTPException'>] paste.httpexceptions: <paste.httpexceptions.HTTPExceptionHandler object at 0x692eb50> paste.httpserver.thread_pool: <paste.httpserver.ThreadPool object at 0x263ad90> paste.recursive.forward: <paste.recursive.Forwarder from /> paste.recursive.include: <paste.recursive.Includer from /> paste.recursive.include_app_iter: <paste.recursive.IncluderAppIter from /> paste.recursive.script_name: '' paste.throw_errors: True webob._parsed_query_vars: (MultiDict([]), '') wsgi process: 'Multithreaded' ------------------------------------------------------------ Any help would be greatly appreciated. Best regards, Sarah