Finally I have found solution. The problem was that in my addons-path, root addons folder wasn't first. When I have changed the order everything is fine. That's my init.d line: start-stop-daemon --start --quiet --pidfile /var/run/${NAME}.pid --chuid ${USER} --background --make-pidfile --exec ${DAEMON} -- --config=${CONFIG} --logfile=${LOGFILE} --debug --database=mydb --addons-path /usr/lib/pymodules/python2.7/openerp/addons,/usr/lib/pymodules/python2.7/openerp/addons/openerp-connector,/usr/lib/pymodules/python2.7/openerp/addons/openerp-connector-ecommerce,/usr/lib/pymodules/python2.7/openerp/addons/openerp-connector-magento,/usr/lib/pymodules/python2.7/openerp/addons/e-commerce-addons,/usr/lib/pymodules/python2.7/openerp/addons/openerp-product-attributes,/usr/lib/pymodules/python2.7/openerp/addons/sale-wkfl

It caused several other errors: - static content have been downloaded with random 404 state - debug mode have given blank page

Problem SOLVED. Hope it helps.