I'm having the same issue with a Pyramid web app. Did anyone find a solution?
I've tried Flup and Waitress as the containers for the pyramid app, and I've tried Lighttpd and Nginx in front... no difference. My latest exceptions look like: Could not convert return value of the view callable function cornice.pyramidhook.handle_exceptions into a response object. The value returned was AttributeError("'Connection' object has no attribute '_Connection__connection'",). and then on the next try ValueError: Could not convert return value of the view callable function cornice.pyramidhook.handle_exceptions into a response object. The value returned was AssertionError('Transaction must be committed using the transaction manager',). I'm using the latest of everything: alembic0.6.0amqp1.0.13anyjson0.3.3argparse1.2.1Beaker1.6.4beautifulsoup4 4.2.1billiard2.7.3.31celery3.0.21Chameleon2.11cornice0.14coverage3.6 distribute0.7.3flup1.0.3.dev-20110405kombu2.5.12Mako0.8.1MarkupSafe0.18meld3 0.6.10mock1.0.1MySQL-python1.2.4nose1.3.0openpyxl1.6.2paramiko1.11.0 PasteDeploy1.5.0pip1.1pycrypto2.6Pygments1.6pyramid1.4.3pyramid-beaker0.8 pyramid-debugtoolbar1.0.6pyramid-mailer0.13pyramid-tm0.7Python2.7 python-dateutil2.1pytz2013brepoze.lru0.6repoze.sendmail4.1selenium2.33.0 Server0.0.6setuptools0.9.8simplejson3.3.0six1.3.0SQLAlchemy0.8.2supervisor 3.0transaction1.4.1translationstring1.1venusian1.0a8waitress0.8.5WebOb1.2.3 WebTest2.0.6wsgiref0.1.2zope.deprecation4.0.2zope.interface4.0.5 zope.sqlalchemy0.7.2 -- You received this message because you are subscribed to the Google Groups "sqlalchemy" group. To unsubscribe from this group and stop receiving emails from it, send an email to sqlalchemy+unsubscr...@googlegroups.com. To post to this group, send email to sqlalchemy@googlegroups.com. Visit this group at http://groups.google.com/group/sqlalchemy. For more options, visit https://groups.google.com/groups/opt_out.